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Issue #14288: Serialization support for builtin iterators.

This commit is contained in:
Kristján Valur Jónsson 2012-04-03 10:49:41 +00:00
parent 283b96b6bd
commit 31668b8f7a
28 changed files with 2190 additions and 104 deletions
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2
Include/iterobject.h
View File

@ -18,6 +18,8 @@ PyAPI_FUNC(PyObject *) PySeqIter_New(PyObject *);
PyAPI_FUNC(PyObject *) PyCallIter_New(PyObject *, PyObject *);
PyAPI_FUNC(PyObject *) _PyIter_GetBuiltin(const char *iter);
#ifdef __cplusplus
}
#endif

7
Lib/test/seq_tests.py
View File

@ -4,6 +4,7 @@ Tests common to tuple, list and UserList.UserList
import unittest
import sys
import pickle
# Various iterables
# This is used for checking the constructor (here and in test_deque.py)
@ -388,3 +389,9 @@ class CommonTest(unittest.TestCase):
self.assertEqual(a.index(0, -4*sys.maxsize, 4*sys.maxsize), 2)
self.assertRaises(ValueError, a.index, 0, 4*sys.maxsize,-4*sys.maxsize)
self.assertRaises(ValueError, a.index, 2, 0, -10)
def test_pickle(self):
lst = self.type2test([4, 5, 6, 7])
lst2 = pickle.loads(pickle.dumps(lst))
self.assertEqual(lst2, lst)
self.assertNotEqual(id(lst2), id(lst))

14
Lib/test/test_array.py
View File

@ -285,6 +285,20 @@ class BaseTest(unittest.TestCase):
self.assertEqual(a.x, b.x)
self.assertEqual(type(a), type(b))
def test_iterator_pickle(self):
data = array.array(self.typecode, self.example)
orgit = iter(data)
d = pickle.dumps(orgit)
it = pickle.loads(d)
self.assertEqual(type(orgit), type(it))
self.assertEqual(list(it), list(data))
if len(data):
it = pickle.loads(d)
next(it)
d = pickle.dumps(it)
self.assertEqual(list(it), list(data)[1:])
def test_insert(self):
a = array.array(self.typecode, self.example)
a.insert(0, self.example[0])

41
Lib/test/test_builtin.py
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@ -14,6 +14,7 @@ import random
import traceback
from test.support import TESTFN, unlink, run_unittest, check_warnings
from operator import neg
import pickle
try:
import pty, signal
except ImportError:
@ -110,7 +111,30 @@ class TestFailingIter:
def __iter__(self):
raise RuntimeError
def filter_char(arg):
return ord(arg) > ord("d")
def map_char(arg):
return chr(ord(arg)+1)
class BuiltinTest(unittest.TestCase):
# Helper to check picklability
def check_iter_pickle(self, it, seq):
itorg = it
d = pickle.dumps(it)
it = pickle.loads(d)
self.assertEqual(type(itorg), type(it))
self.assertEqual(list(it), seq)
#test the iterator after dropping one from it
it = pickle.loads(d)
try:
next(it)
except StopIteration:
return
d = pickle.dumps(it)
it = pickle.loads(d)
self.assertEqual(list(it), seq[1:])
def test_import(self):
__import__('sys')
@ -566,6 +590,11 @@ class BuiltinTest(unittest.TestCase):
self.assertEqual(list(filter(lambda x: x>=3, (1, 2, 3, 4))), [3, 4])
self.assertRaises(TypeError, list, filter(42, (1, 2)))
def test_filter_pickle(self):
f1 = filter(filter_char, "abcdeabcde")
f2 = filter(filter_char, "abcdeabcde")
self.check_iter_pickle(f1, list(f2))
def test_getattr(self):
self.assertTrue(getattr(sys, 'stdout') is sys.stdout)
self.assertRaises(TypeError, getattr, sys, 1)
@ -759,6 +788,11 @@ class BuiltinTest(unittest.TestCase):
raise RuntimeError
self.assertRaises(RuntimeError, list, map(badfunc, range(5)))
def test_map_pickle(self):
m1 = map(map_char, "Is this the real life?")
m2 = map(map_char, "Is this the real life?")
self.check_iter_pickle(m1, list(m2))
def test_max(self):
self.assertEqual(max('123123'), '3')
self.assertEqual(max(1, 2, 3), 3)
@ -1300,6 +1334,13 @@ class BuiltinTest(unittest.TestCase):
return i
self.assertRaises(ValueError, list, zip(BadSeq(), BadSeq()))
def test_zip_pickle(self):
a = (1, 2, 3)
b = (4, 5, 6)
t = [(1, 4), (2, 5), (3, 6)]
z1 = zip(a, b)
self.check_iter_pickle(z1, t)
def test_format(self):
# Test the basic machinery of the format() builtin. Don't test
# the specifics of the various formatters

18
Lib/test/test_bytes.py
View File

@ -518,6 +518,24 @@ class BaseBytesTest(unittest.TestCase):
q = pickle.loads(ps)
self.assertEqual(b, q)
def test_iterator_pickling(self):
for b in b"", b"a", b"abc", b"\xffab\x80", b"\0\0\377\0\0":
it = itorg = iter(self.type2test(b))
data = list(self.type2test(b))
d = pickle.dumps(it)
it = pickle.loads(d)
self.assertEqual(type(itorg), type(it))
self.assertEqual(list(it), data)
it = pickle.loads(d)
try:
next(it)
except StopIteration:
continue
d = pickle.dumps(it)
it = pickle.loads(d)
self.assertEqual(list(it), data[1:])
def test_strip(self):
b = self.type2test(b'mississippi')
self.assertEqual(b.strip(b'i'), b'mississipp')

13
Lib/test/test_deque.py
View File

@ -471,6 +471,19 @@ class TestBasic(unittest.TestCase):
## self.assertNotEqual(id(d), id(e))
## self.assertEqual(id(e), id(e[-1]))
def test_iterator_pickle(self):
data = deque(range(200))
it = itorg = iter(data)
d = pickle.dumps(it)
it = pickle.loads(d)
self.assertEqual(type(itorg), type(it))
self.assertEqual(list(it), list(data))
it = pickle.loads(d)
next(it)
d = pickle.dumps(it)
self.assertEqual(list(it), list(data)[1:])
def test_deepcopy(self):
mut = [10]
d = deque([mut])

54
Lib/test/test_dict.py
View File

@ -2,7 +2,9 @@ import unittest
from test import support
import collections, random, string
import collections.abc
import gc, weakref
import pickle
class DictTest(unittest.TestCase):
@ -803,6 +805,58 @@ class DictTest(unittest.TestCase):
pass
self._tracked(MyDict())
def test_iterator_pickling(self):
data = {1:"a", 2:"b", 3:"c"}
it = iter(data)
d = pickle.dumps(it)
it = pickle.loads(d)
self.assertEqual(sorted(it), sorted(data))
it = pickle.loads(d)
try:
drop = next(it)
except StopIteration:
return
d = pickle.dumps(it)
it = pickle.loads(d)
del data[drop]
self.assertEqual(sorted(it), sorted(data))
def test_itemiterator_pickling(self):
data = {1:"a", 2:"b", 3:"c"}
# dictviews aren't picklable, only their iterators
itorg = iter(data.items())
d = pickle.dumps(itorg)
it = pickle.loads(d)
# note that the type of type of the unpickled iterator
# is not necessarily the same as the original. It is
# merely an object supporting the iterator protocol, yielding
# the same objects as the original one.
# self.assertEqual(type(itorg), type(it))
self.assertTrue(isinstance(it, collections.abc.Iterator))
self.assertEqual(dict(it), data)
it = pickle.loads(d)
drop = next(it)
d = pickle.dumps(it)
it = pickle.loads(d)
del data[drop[0]]
self.assertEqual(dict(it), data)
def test_valuesiterator_pickling(self):
data = {1:"a", 2:"b", 3:"c"}
# data.values() isn't picklable, only its iterator
it = iter(data.values())
d = pickle.dumps(it)
it = pickle.loads(d)
self.assertEqual(sorted(list(it)), sorted(list(data.values())))
it = pickle.loads(d)
drop = next(it)
d = pickle.dumps(it)
it = pickle.loads(d)
values = list(it) + [drop]
self.assertEqual(sorted(values), sorted(list(data.values())))
from test import mapping_tests

30
Lib/test/test_enumerate.py
View File

@ -1,5 +1,6 @@
import unittest
import sys
import pickle
from test import support
@ -61,7 +62,25 @@ class N:
def __iter__(self):
return self
class EnumerateTestCase(unittest.TestCase):
class PickleTest:
# Helper to check picklability
def check_pickle(self, itorg, seq):
d = pickle.dumps(itorg)
it = pickle.loads(d)
self.assertEqual(type(itorg), type(it))
self.assertEqual(list(it), seq)
it = pickle.loads(d)
try:
next(it)
except StopIteration:
self.assertFalse(seq[1:])
return
d = pickle.dumps(it)
it = pickle.loads(d)
self.assertEqual(list(it), seq[1:])
class EnumerateTestCase(unittest.TestCase, PickleTest):
enum = enumerate
seq, res = 'abc', [(0,'a'), (1,'b'), (2,'c')]
@ -73,6 +92,9 @@ class EnumerateTestCase(unittest.TestCase):
self.assertEqual(list(self.enum(self.seq)), self.res)
self.enum.__doc__
def test_pickle(self):
self.check_pickle(self.enum(self.seq), self.res)
def test_getitemseqn(self):
self.assertEqual(list(self.enum(G(self.seq))), self.res)
e = self.enum(G(''))
@ -126,7 +148,7 @@ class TestBig(EnumerateTestCase):
seq = range(10,20000,2)
res = list(zip(range(20000), seq))
class TestReversed(unittest.TestCase):
class TestReversed(unittest.TestCase, PickleTest):
def test_simple(self):
class A:
@ -212,6 +234,10 @@ class TestReversed(unittest.TestCase):
ngi = NoGetItem()
self.assertRaises(TypeError, reversed, ngi)
def test_pickle(self):
for data in 'abc', range(5), tuple(enumerate('abc')), range(1,17,5):
self.check_pickle(reversed(data), list(data)[::-1])
class EnumerateStartTestCase(EnumerateTestCase):

43
Lib/test/test_iter.py
View File

@ -2,6 +2,8 @@
import unittest
from test.support import run_unittest, TESTFN, unlink, cpython_only
import pickle
import collections.abc
# Test result of triple loop (too big to inline)
TRIPLETS = [(0, 0, 0), (0, 0, 1), (0, 0, 2),
@ -28,6 +30,8 @@ class BasicIterClass:
raise StopIteration
self.i = res + 1
return res
def __iter__(self):
return self
class IteratingSequenceClass:
def __init__(self, n):
@ -49,7 +53,9 @@ class SequenceClass:
class TestCase(unittest.TestCase):
# Helper to check that an iterator returns a given sequence
def check_iterator(self, it, seq):
def check_iterator(self, it, seq, pickle=True):
if pickle:
self.check_pickle(it, seq)
res = []
while 1:
try:
@ -60,12 +66,33 @@ class TestCase(unittest.TestCase):
self.assertEqual(res, seq)
# Helper to check that a for loop generates a given sequence
def check_for_loop(self, expr, seq):
def check_for_loop(self, expr, seq, pickle=True):
if pickle:
self.check_pickle(iter(expr), seq)
res = []
for val in expr:
res.append(val)
self.assertEqual(res, seq)
# Helper to check picklability
def check_pickle(self, itorg, seq):
d = pickle.dumps(itorg)
it = pickle.loads(d)
# Cannot assert type equality because dict iterators unpickle as list
# iterators.
# self.assertEqual(type(itorg), type(it))
self.assertTrue(isinstance(it, collections.abc.Iterator))
self.assertEqual(list(it), seq)
it = pickle.loads(d)
try:
next(it)
except StopIteration:
return
d = pickle.dumps(it)
it = pickle.loads(d)
self.assertEqual(list(it), seq[1:])
# Test basic use of iter() function
def test_iter_basic(self):
self.check_iterator(iter(range(10)), list(range(10)))
@ -138,7 +165,7 @@ class TestCase(unittest.TestCase):
if i > 100:
raise IndexError # Emergency stop
return i
self.check_iterator(iter(C(), 10), list(range(10)))
self.check_iterator(iter(C(), 10), list(range(10)), pickle=False)
# Test two-argument iter() with function
def test_iter_function(self):
@ -146,7 +173,7 @@ class TestCase(unittest.TestCase):
i = state[0]
state[0] = i+1
return i
self.check_iterator(iter(spam, 10), list(range(10)))
self.check_iterator(iter(spam, 10), list(range(10)), pickle=False)
# Test two-argument iter() with function that raises StopIteration
def test_iter_function_stop(self):
@ -156,7 +183,7 @@ class TestCase(unittest.TestCase):
raise StopIteration
state[0] = i+1
return i
self.check_iterator(iter(spam, 20), list(range(10)))
self.check_iterator(iter(spam, 20), list(range(10)), pickle=False)
# Test exception propagation through function iterator
def test_exception_function(self):
@ -198,7 +225,7 @@ class TestCase(unittest.TestCase):
if i == 10:
raise StopIteration
return SequenceClass.__getitem__(self, i)
self.check_for_loop(MySequenceClass(20), list(range(10)))
self.check_for_loop(MySequenceClass(20), list(range(10)), pickle=False)
# Test a big range
def test_iter_big_range(self):
@ -237,8 +264,8 @@ class TestCase(unittest.TestCase):
f.close()
f = open(TESTFN, "r")
try:
self.check_for_loop(f, ["0\n", "1\n", "2\n", "3\n", "4\n"])
self.check_for_loop(f, [])
self.check_for_loop(f, ["0\n", "1\n", "2\n", "3\n", "4\n"], pickle=False)
self.check_for_loop(f, [], pickle=False)
finally:
f.close()
try:

386
Lib/test/test_itertools.py
View File

@ -37,6 +37,13 @@ def isOdd(x):
'Test predicate'
return x%2==1
def tupleize(*args):
return args
def irange(n):
for i in range(n):
yield i
class StopNow:
'Class emulating an empty iterable.'
def __iter__(self):
@ -55,8 +62,59 @@ def fact(n):
'Factorial'
return prod(range(1, n+1))
# root level methods for pickling ability
def testR(r):
return r[0]
def testR2(r):
return r[2]
def underten(x):
return x<10
class TestBasicOps(unittest.TestCase):
def pickletest(self, it, stop=4, take=1, compare=None):
"""Test that an iterator is the same after pickling, also when part-consumed"""
def expand(it, i=0):
# Recursively expand iterables, within sensible bounds
if i > 10:
raise RuntimeError("infinite recursion encountered")
if isinstance(it, str):
return it
try:
l = list(islice(it, stop))
except TypeError:
return it # can't expand it
return [expand(e, i+1) for e in l]
# Test the initial copy against the original
dump = pickle.dumps(it)
i2 = pickle.loads(dump)
self.assertEqual(type(it), type(i2))
a, b = expand(it), expand(i2)
self.assertEqual(a, b)
if compare:
c = expand(compare)
self.assertEqual(a, c)
# Take from the copy, and create another copy and compare them.
i3 = pickle.loads(dump)
took = 0
try:
for i in range(take):
next(i3)
took += 1
except StopIteration:
pass #in case there is less data than 'take'
dump = pickle.dumps(i3)
i4 = pickle.loads(dump)
a, b = expand(i3), expand(i4)
self.assertEqual(a, b)
if compare:
c = expand(compare[took:])
self.assertEqual(a, c);
def test_accumulate(self):
self.assertEqual(list(accumulate(range(10))), # one positional arg
[0, 1, 3, 6, 10, 15, 21, 28, 36, 45])
@ -83,6 +141,7 @@ class TestBasicOps(unittest.TestCase):
[2, 16, 144, 720, 5040, 0, 0, 0, 0, 0])
with self.assertRaises(TypeError):
list(accumulate(s, chr)) # unary-operation
self.pickletest(accumulate(range(10))) # test pickling
def test_chain(self):
@ -106,14 +165,43 @@ class TestBasicOps(unittest.TestCase):
self.assertEqual(take(4, chain.from_iterable(['abc', 'def'])), list('abcd'))
self.assertRaises(TypeError, list, chain.from_iterable([2, 3]))
def test_chain_reducible(self):
operators = [copy.deepcopy,
lambda s: pickle.loads(pickle.dumps(s))]
for oper in operators:
it = chain('abc', 'def')
self.assertEqual(list(oper(it)), list('abcdef'))
self.assertEqual(next(it), 'a')
self.assertEqual(list(oper(it)), list('bcdef'))
self.assertEqual(list(oper(chain(''))), [])
self.assertEqual(take(4, oper(chain('abc', 'def'))), list('abcd'))
self.assertRaises(TypeError, list, oper(chain(2, 3)))
self.pickletest(chain('abc', 'def'), compare=list('abcdef'))
def test_combinations(self):
self.assertRaises(TypeError, combinations, 'abc') # missing r argument
self.assertRaises(TypeError, combinations, 'abc', 2, 1) # too many arguments
self.assertRaises(TypeError, combinations, None) # pool is not iterable
self.assertRaises(ValueError, combinations, 'abc', -2) # r is negative
self.assertEqual(list(combinations('abc', 32)), []) # r > n
self.assertEqual(list(combinations(range(4), 3)),
[(0,1,2), (0,1,3), (0,2,3), (1,2,3)])
for op in (lambda a:a, lambda a:pickle.loads(pickle.dumps(a))):
self.assertEqual(list(op(combinations('abc', 32))), []) # r > n
self.assertEqual(list(op(combinations('ABCD', 2))),
[('A','B'), ('A','C'), ('A','D'), ('B','C'), ('B','D'), ('C','D')])
testIntermediate = combinations('ABCD', 2)
next(testIntermediate)
self.assertEqual(list(op(testIntermediate)),
[('A','C'), ('A','D'), ('B','C'), ('B','D'), ('C','D')])
self.assertEqual(list(op(combinations(range(4), 3))),
[(0,1,2), (0,1,3), (0,2,3), (1,2,3)])
testIntermediate = combinations(range(4), 3)
next(testIntermediate)
self.assertEqual(list(op(testIntermediate)),
[(0,1,3), (0,2,3), (1,2,3)])
def combinations1(iterable, r):
'Pure python version shown in the docs'
@ -168,6 +256,9 @@ class TestBasicOps(unittest.TestCase):
self.assertEqual(result, list(combinations2(values, r))) # matches second pure python version
self.assertEqual(result, list(combinations3(values, r))) # matches second pure python version
self.pickletest(combinations(values, r)) # test pickling
# Test implementation detail: tuple re-use
@support.impl_detail("tuple reuse is specific to CPython")
def test_combinations_tuple_reuse(self):
self.assertEqual(len(set(map(id, combinations('abcde', 3)))), 1)
@ -179,8 +270,15 @@ class TestBasicOps(unittest.TestCase):
self.assertRaises(TypeError, cwr, 'abc', 2, 1) # too many arguments
self.assertRaises(TypeError, cwr, None) # pool is not iterable
self.assertRaises(ValueError, cwr, 'abc', -2) # r is negative
self.assertEqual(list(cwr('ABC', 2)),
[('A','A'), ('A','B'), ('A','C'), ('B','B'), ('B','C'), ('C','C')])
for op in (lambda a:a, lambda a:pickle.loads(pickle.dumps(a))):
self.assertEqual(list(op(cwr('ABC', 2))),
[('A','A'), ('A','B'), ('A','C'), ('B','B'), ('B','C'), ('C','C')])
testIntermediate = cwr('ABC', 2)
next(testIntermediate)
self.assertEqual(list(op(testIntermediate)),
[('A','B'), ('A','C'), ('B','B'), ('B','C'), ('C','C')])
def cwr1(iterable, r):
'Pure python version shown in the docs'
@ -239,6 +337,10 @@ class TestBasicOps(unittest.TestCase):
self.assertEqual(result, list(cwr1(values, r))) # matches first pure python version
self.assertEqual(result, list(cwr2(values, r))) # matches second pure python version
self.pickletest(cwr(values,r)) # test pickling
# Test implementation detail: tuple re-use
@support.impl_detail("tuple reuse is specific to CPython")
def test_combinations_with_replacement_tuple_reuse(self):
cwr = combinations_with_replacement
@ -305,6 +407,8 @@ class TestBasicOps(unittest.TestCase):
self.assertEqual(result, list(permutations(values, None))) # test r as None
self.assertEqual(result, list(permutations(values))) # test default r
self.pickletest(permutations(values, r)) # test pickling
@support.impl_detail("tuple resuse is CPython specific")
def test_permutations_tuple_reuse(self):
self.assertEqual(len(set(map(id, permutations('abcde', 3)))), 1)
@ -359,6 +463,24 @@ class TestBasicOps(unittest.TestCase):
self.assertRaises(TypeError, compress, range(6)) # too few args
self.assertRaises(TypeError, compress, range(6), None) # too many args
# check copy, deepcopy, pickle
for op in (lambda a:copy.copy(a), lambda a:copy.deepcopy(a), lambda a:pickle.loads(pickle.dumps(a))):
for data, selectors, result1, result2 in [
('ABCDEF', [1,0,1,0,1,1], 'ACEF', 'CEF'),
('ABCDEF', [0,0,0,0,0,0], '', ''),
('ABCDEF', [1,1,1,1,1,1], 'ABCDEF', 'BCDEF'),
('ABCDEF', [1,0,1], 'AC', 'C'),
('ABC', [0,1,1,1,1,1], 'BC', 'C'),
]:
self.assertEqual(list(op(compress(data=data, selectors=selectors))), list(result1))
self.assertEqual(list(op(compress(data, selectors))), list(result1))
testIntermediate = compress(data, selectors)
if result1:
next(testIntermediate)
self.assertEqual(list(op(testIntermediate)), list(result2))
def test_count(self):
self.assertEqual(lzip('abc',count()), [('a', 0), ('b', 1), ('c', 2)])
self.assertEqual(lzip('abc',count(3)), [('a', 3), ('b', 4), ('c', 5)])
@ -393,7 +515,7 @@ class TestBasicOps(unittest.TestCase):
c = count(value)
self.assertEqual(next(copy.copy(c)), value)
self.assertEqual(next(copy.deepcopy(c)), value)
self.assertEqual(next(pickle.loads(pickle.dumps(c))), value)
self.pickletest(count(value))
#check proper internal error handling for large "step' sizes
count(1, maxsize+5); sys.exc_info()
@ -440,6 +562,7 @@ class TestBasicOps(unittest.TestCase):
else:
r2 = ('count(%r, %r)' % (i, j)).replace('L', '')
self.assertEqual(r1, r2)
self.pickletest(count(i, j))
def test_cycle(self):
self.assertEqual(take(10, cycle('abc')), list('abcabcabca'))
@ -448,6 +571,18 @@ class TestBasicOps(unittest.TestCase):
self.assertRaises(TypeError, cycle, 5)
self.assertEqual(list(islice(cycle(gen3()),10)), [0,1,2,0,1,2,0,1,2,0])
# check copy, deepcopy, pickle
c = cycle('abc')
self.assertEqual(next(c), 'a')
#simple copy currently not supported, because __reduce__ returns
#an internal iterator
#self.assertEqual(take(10, copy.copy(c)), list('bcabcabcab'))
self.assertEqual(take(10, copy.deepcopy(c)), list('bcabcabcab'))
self.assertEqual(take(10, pickle.loads(pickle.dumps(c))), list('bcabcabcab'))
next(c)
self.assertEqual(take(10, pickle.loads(pickle.dumps(c))), list('cabcabcabc'))
self.pickletest(cycle('abc'))
def test_groupby(self):
# Check whether it accepts arguments correctly
self.assertEqual([], list(groupby([])))
@ -466,18 +601,37 @@ class TestBasicOps(unittest.TestCase):
dup.append(elem)
self.assertEqual(s, dup)
# Check normal pickled
dup = []
for k, g in pickle.loads(pickle.dumps(groupby(s, testR))):
for elem in g:
self.assertEqual(k, elem[0])
dup.append(elem)
self.assertEqual(s, dup)
# Check nested case
dup = []
for k, g in groupby(s, lambda r:r[0]):
for ik, ig in groupby(g, lambda r:r[2]):
for k, g in groupby(s, testR):
for ik, ig in groupby(g, testR2):
for elem in ig:
self.assertEqual(k, elem[0])
self.assertEqual(ik, elem[2])
dup.append(elem)
self.assertEqual(s, dup)
# Check nested and pickled
dup = []
for k, g in pickle.loads(pickle.dumps(groupby(s, testR))):
for ik, ig in pickle.loads(pickle.dumps(groupby(g, testR2))):
for elem in ig:
self.assertEqual(k, elem[0])
self.assertEqual(ik, elem[2])
dup.append(elem)
self.assertEqual(s, dup)
# Check case where inner iterator is not used
keys = [k for k, g in groupby(s, lambda r:r[0])]
keys = [k for k, g in groupby(s, testR)]
expectedkeys = set([r[0] for r in s])
self.assertEqual(set(keys), expectedkeys)
self.assertEqual(len(keys), len(expectedkeys))
@ -548,6 +702,20 @@ class TestBasicOps(unittest.TestCase):
self.assertRaises(TypeError, filter, isEven, 3)
self.assertRaises(TypeError, next, filter(range(6), range(6)))
# check copy, deepcopy, pickle
ans = [0,2,4]
c = filter(isEven, range(6))
self.assertEqual(list(copy.copy(c)), ans)
c = filter(isEven, range(6))
self.assertEqual(list(copy.deepcopy(c)), ans)
c = filter(isEven, range(6))
self.assertEqual(list(pickle.loads(pickle.dumps(c))), ans)
next(c)
self.assertEqual(list(pickle.loads(pickle.dumps(c))), ans[1:])
c = filter(isEven, range(6))
self.pickletest(c)
def test_filterfalse(self):
self.assertEqual(list(filterfalse(isEven, range(6))), [1,3,5])
self.assertEqual(list(filterfalse(None, [0,1,0,2,0])), [0,0,0])
@ -558,6 +726,7 @@ class TestBasicOps(unittest.TestCase):
self.assertRaises(TypeError, filterfalse, lambda x:x, range(6), 7)
self.assertRaises(TypeError, filterfalse, isEven, 3)
self.assertRaises(TypeError, next, filterfalse(range(6), range(6)))
self.pickletest(filterfalse(isEven, range(6)))
def test_zip(self):
# XXX This is rather silly now that builtin zip() calls zip()...
@ -582,6 +751,23 @@ class TestBasicOps(unittest.TestCase):
ids = list(map(id, list(zip('abc', 'def'))))
self.assertEqual(len(dict.fromkeys(ids)), len(ids))
# check copy, deepcopy, pickle
ans = [(x,y) for x, y in copy.copy(zip('abc',count()))]
self.assertEqual(ans, [('a', 0), ('b', 1), ('c', 2)])
ans = [(x,y) for x, y in copy.deepcopy(zip('abc',count()))]
self.assertEqual(ans, [('a', 0), ('b', 1), ('c', 2)])
ans = [(x,y) for x, y in pickle.loads(pickle.dumps(zip('abc',count())))]
self.assertEqual(ans, [('a', 0), ('b', 1), ('c', 2)])
testIntermediate = zip('abc',count())
next(testIntermediate)
ans = [(x,y) for x, y in pickle.loads(pickle.dumps(testIntermediate))]
self.assertEqual(ans, [('b', 1), ('c', 2)])
self.pickletest(zip('abc', count()))
def test_ziplongest(self):
for args in [
['abc', range(6)],
@ -631,6 +817,12 @@ class TestBasicOps(unittest.TestCase):
ids = list(map(id, list(zip_longest('abc', 'def'))))
self.assertEqual(len(dict.fromkeys(ids)), len(ids))
def test_zip_longest_pickling(self):
self.pickletest(zip_longest("abc", "def"))
self.pickletest(zip_longest("abc", "defgh"))
self.pickletest(zip_longest("abc", "defgh", fillvalue=1))
self.pickletest(zip_longest("", "defgh"))
def test_bug_7244(self):
class Repeater:
@ -734,6 +926,20 @@ class TestBasicOps(unittest.TestCase):
self.assertEqual(len(set(map(id, product('abc', 'def')))), 1)
self.assertNotEqual(len(set(map(id, list(product('abc', 'def'))))), 1)
def test_product_pickling(self):
# check copy, deepcopy, pickle
for args, result in [
([], [()]), # zero iterables
(['ab'], [('a',), ('b',)]), # one iterable
([range(2), range(3)], [(0,0), (0,1), (0,2), (1,0), (1,1), (1,2)]), # two iterables
([range(0), range(2), range(3)], []), # first iterable with zero length
([range(2), range(0), range(3)], []), # middle iterable with zero length
([range(2), range(3), range(0)], []), # last iterable with zero length
]:
self.assertEqual(list(copy.copy(product(*args))), result)
self.assertEqual(list(copy.deepcopy(product(*args))), result)
self.pickletest(product(*args))
def test_repeat(self):
self.assertEqual(list(repeat(object='a', times=3)), ['a', 'a', 'a'])
self.assertEqual(lzip(range(3),repeat('a')),
@ -752,11 +958,16 @@ class TestBasicOps(unittest.TestCase):
list(r)
self.assertEqual(repr(r), 'repeat((1+0j), 0)')
# check copy, deepcopy, pickle
c = repeat(object='a', times=10)
self.assertEqual(next(c), 'a')
self.assertEqual(take(2, copy.copy(c)), list('a' * 2))
self.assertEqual(take(2, copy.deepcopy(c)), list('a' * 2))
self.pickletest(repeat(object='a', times=10))
def test_map(self):
self.assertEqual(list(map(operator.pow, range(3), range(1,7))),
[0**1, 1**2, 2**3])
def tupleize(*args):
return args
self.assertEqual(list(map(tupleize, 'abc', range(5))),
[('a',0),('b',1),('c',2)])
self.assertEqual(list(map(tupleize, 'abc', count())),
@ -771,6 +982,18 @@ class TestBasicOps(unittest.TestCase):
self.assertRaises(ValueError, next, map(errfunc, [4], [5]))
self.assertRaises(TypeError, next, map(onearg, [4], [5]))
# check copy, deepcopy, pickle
ans = [('a',0),('b',1),('c',2)]
c = map(tupleize, 'abc', count())
self.assertEqual(list(copy.copy(c)), ans)
c = map(tupleize, 'abc', count())
self.assertEqual(list(copy.deepcopy(c)), ans)
c = map(tupleize, 'abc', count())
self.pickletest(c)
def test_starmap(self):
self.assertEqual(list(starmap(operator.pow, zip(range(3), range(1,7)))),
[0**1, 1**2, 2**3])
@ -785,6 +1008,18 @@ class TestBasicOps(unittest.TestCase):
self.assertRaises(ValueError, next, starmap(errfunc, [(4,5)]))
self.assertRaises(TypeError, next, starmap(onearg, [(4,5)]))
# check copy, deepcopy, pickle
ans = [0**1, 1**2, 2**3]
c = starmap(operator.pow, zip(range(3), range(1,7)))
self.assertEqual(list(copy.copy(c)), ans)
c = starmap(operator.pow, zip(range(3), range(1,7)))
self.assertEqual(list(copy.deepcopy(c)), ans)
c = starmap(operator.pow, zip(range(3), range(1,7)))
self.pickletest(c)
def test_islice(self):
for args in [ # islice(args) should agree with range(args)
(10, 20, 3),
@ -817,17 +1052,18 @@ class TestBasicOps(unittest.TestCase):
self.assertEqual(list(it), list(range(3, 10)))
# Test invalid arguments
self.assertRaises(TypeError, islice, range(10))
self.assertRaises(TypeError, islice, range(10), 1, 2, 3, 4)
self.assertRaises(ValueError, islice, range(10), -5, 10, 1)
self.assertRaises(ValueError, islice, range(10), 1, -5, -1)
self.assertRaises(ValueError, islice, range(10), 1, 10, -1)
self.assertRaises(ValueError, islice, range(10), 1, 10, 0)
self.assertRaises(ValueError, islice, range(10), 'a')
self.assertRaises(ValueError, islice, range(10), 'a', 1)
self.assertRaises(ValueError, islice, range(10), 1, 'a')
self.assertRaises(ValueError, islice, range(10), 'a', 1, 1)
self.assertRaises(ValueError, islice, range(10), 1, 'a', 1)
ra = range(10)
self.assertRaises(TypeError, islice, ra)
self.assertRaises(TypeError, islice, ra, 1, 2, 3, 4)
self.assertRaises(ValueError, islice, ra, -5, 10, 1)
self.assertRaises(ValueError, islice, ra, 1, -5, -1)
self.assertRaises(ValueError, islice, ra, 1, 10, -1)
self.assertRaises(ValueError, islice, ra, 1, 10, 0)
self.assertRaises(ValueError, islice, ra, 'a')
self.assertRaises(ValueError, islice, ra, 'a', 1)
self.assertRaises(ValueError, islice, ra, 1, 'a')
self.assertRaises(ValueError, islice, ra, 'a', 1, 1)
self.assertRaises(ValueError, islice, ra, 1, 'a', 1)
self.assertEqual(len(list(islice(count(), 1, 10, maxsize))), 1)
# Issue #10323: Less islice in a predictable state
@ -835,9 +1071,22 @@ class TestBasicOps(unittest.TestCase):
self.assertEqual(list(islice(c, 1, 3, 50)), [1])
self.assertEqual(next(c), 3)
# check copy, deepcopy, pickle
for args in [ # islice(args) should agree with range(args)
(10, 20, 3),
(10, 3, 20),
(10, 20),
(10, 3),
(20,)
]:
self.assertEqual(list(copy.copy(islice(range(100), *args))),
list(range(*args)))
self.assertEqual(list(copy.deepcopy(islice(range(100), *args))),
list(range(*args)))
self.pickletest(islice(range(100), *args))
def test_takewhile(self):
data = [1, 3, 5, 20, 2, 4, 6, 8]
underten = lambda x: x<10
self.assertEqual(list(takewhile(underten, data)), [1, 3, 5])
self.assertEqual(list(takewhile(underten, [])), [])
self.assertRaises(TypeError, takewhile)
@ -849,9 +1098,14 @@ class TestBasicOps(unittest.TestCase):
self.assertEqual(list(t), [1, 1, 1])
self.assertRaises(StopIteration, next, t)
# check copy, deepcopy, pickle
self.assertEqual(list(copy.copy(takewhile(underten, data))), [1, 3, 5])
self.assertEqual(list(copy.deepcopy(takewhile(underten, data))),
[1, 3, 5])
self.pickletest(takewhile(underten, data))
def test_dropwhile(self):
data = [1, 3, 5, 20, 2, 4, 6, 8]
underten = lambda x: x<10
self.assertEqual(list(dropwhile(underten, data)), [20, 2, 4, 6, 8])
self.assertEqual(list(dropwhile(underten, [])), [])
self.assertRaises(TypeError, dropwhile)
@ -860,11 +1114,14 @@ class TestBasicOps(unittest.TestCase):
self.assertRaises(TypeError, next, dropwhile(10, [(4,5)]))
self.assertRaises(ValueError, next, dropwhile(errfunc, [(4,5)]))
# check copy, deepcopy, pickle
self.assertEqual(list(copy.copy(dropwhile(underten, data))), [20, 2, 4, 6, 8])
self.assertEqual(list(copy.deepcopy(dropwhile(underten, data))),
[20, 2, 4, 6, 8])
self.pickletest(dropwhile(underten, data))
def test_tee(self):
n = 200
def irange(n):
for i in range(n):
yield i
a, b = tee([]) # test empty iterator
self.assertEqual(list(a), [])
@ -949,6 +1206,67 @@ class TestBasicOps(unittest.TestCase):
del a
self.assertRaises(ReferenceError, getattr, p, '__class__')
ans = list('abc')
long_ans = list(range(10000))
# check copy
a, b = tee('abc')
self.assertEqual(list(copy.copy(a)), ans)
self.assertEqual(list(copy.copy(b)), ans)
a, b = tee(list(range(10000)))
self.assertEqual(list(copy.copy(a)), long_ans)
self.assertEqual(list(copy.copy(b)), long_ans)
# check partially consumed copy
a, b = tee('abc')
take(2, a)
take(1, b)
self.assertEqual(list(copy.copy(a)), ans[2:])
self.assertEqual(list(copy.copy(b)), ans[1:])
self.assertEqual(list(a), ans[2:])
self.assertEqual(list(b), ans[1:])
a, b = tee(range(10000))
take(100, a)
take(60, b)
self.assertEqual(list(copy.copy(a)), long_ans[100:])
self.assertEqual(list(copy.copy(b)), long_ans[60:])
self.assertEqual(list(a), long_ans[100:])
self.assertEqual(list(b), long_ans[60:])
# check deepcopy
a, b = tee('abc')
self.assertEqual(list(copy.deepcopy(a)), ans)
self.assertEqual(list(copy.deepcopy(b)), ans)
self.assertEqual(list(a), ans)
self.assertEqual(list(b), ans)
a, b = tee(range(10000))
self.assertEqual(list(copy.deepcopy(a)), long_ans)
self.assertEqual(list(copy.deepcopy(b)), long_ans)
self.assertEqual(list(a), long_ans)
self.assertEqual(list(b), long_ans)
# check partially consumed deepcopy
a, b = tee('abc')
take(2, a)
take(1, b)
self.assertEqual(list(copy.deepcopy(a)), ans[2:])
self.assertEqual(list(copy.deepcopy(b)), ans[1:])
self.assertEqual(list(a), ans[2:])
self.assertEqual(list(b), ans[1:])
a, b = tee(range(10000))
take(100, a)
take(60, b)
self.assertEqual(list(copy.deepcopy(a)), long_ans[100:])
self.assertEqual(list(copy.deepcopy(b)), long_ans[60:])
self.assertEqual(list(a), long_ans[100:])
self.assertEqual(list(b), long_ans[60:])
# check pickle
self.pickletest(iter(tee('abc')))
a, b = tee('abc')
self.pickletest(a, compare=ans)
self.pickletest(b, compare=ans)
def test_StopIteration(self):
self.assertRaises(StopIteration, next, zip())
@ -974,9 +1292,21 @@ class TestBasicOps(unittest.TestCase):
class TestExamples(unittest.TestCase):
def test_accumlate(self):
def test_accumulate(self):
self.assertEqual(list(accumulate([1,2,3,4,5])), [1, 3, 6, 10, 15])
def test_accumulate_reducible(self):
# check copy, deepcopy, pickle
data = [1, 2, 3, 4, 5]
accumulated = [1, 3, 6, 10, 15]
it = accumulate(data)
self.assertEqual(list(pickle.loads(pickle.dumps(it))), accumulated[:])
self.assertEqual(next(it), 1)
self.assertEqual(list(pickle.loads(pickle.dumps(it))), accumulated[1:])
self.assertEqual(list(copy.deepcopy(it)), accumulated[1:])
self.assertEqual(list(copy.copy(it)), accumulated[1:])
def test_chain(self):
self.assertEqual(''.join(chain('ABC', 'DEF')), 'ABCDEF')

28
Lib/test/test_list.py
View File

@ -1,5 +1,6 @@
import sys
from test import support, list_tests
import pickle
class ListTest(list_tests.CommonTest):
type2test = list
@ -69,6 +70,33 @@ class ListTest(list_tests.CommonTest):
check(10) # check our checking code
check(1000000)
def test_iterator_pickle(self):
# Userlist iterators don't support pickling yet since
# they are based on generators.
data = self.type2test([4, 5, 6, 7])
it = itorg = iter(data)
d = pickle.dumps(it)
it = pickle.loads(d)
self.assertEqual(type(itorg), type(it))
self.assertEqual(self.type2test(it), self.type2test(data))
it = pickle.loads(d)
next(it)
d = pickle.dumps(it)
self.assertEqual(self.type2test(it), self.type2test(data)[1:])
def test_reversed_pickle(self):
data = self.type2test([4, 5, 6, 7])
it = itorg = reversed(data)
d = pickle.dumps(it)
it = pickle.loads(d)
self.assertEqual(type(itorg), type(it))
self.assertEqual(self.type2test(it), self.type2test(reversed(data)))
it = pickle.loads(d)
next(it)
d = pickle.dumps(it)
self.assertEqual(self.type2test(it), self.type2test(reversed(data))[1:])
def test_main(verbose=None):
support.run_unittest(ListTest)

24
Lib/test/test_range.py
View File

@ -341,13 +341,35 @@ class RangeTest(unittest.TestCase):
def test_pickling(self):
testcases = [(13,), (0, 11), (-22, 10), (20, 3, -1),
(13, 21, 3), (-2, 2, 2)]
(13, 21, 3), (-2, 2, 2), (2**65, 2**65+2)]
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
for t in testcases:
r = range(*t)
self.assertEqual(list(pickle.loads(pickle.dumps(r, proto))),
list(r))
def test_iterator_pickling(self):
testcases = [(13,), (0, 11), (-22, 10), (20, 3, -1),
(13, 21, 3), (-2, 2, 2), (2**65, 2**65+2)]
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
for t in testcases:
it = itorg = iter(range(*t))
data = list(range(*t))
d = pickle.dumps(it)
it = pickle.loads(d)
self.assertEqual(type(itorg), type(it))
self.assertEqual(list(it), data)
it = pickle.loads(d)
try:
next(it)
except StopIteration:
continue
d = pickle.dumps(it)
it = pickle.loads(d)
self.assertEqual(list(it), data[1:])
def test_odd_bug(self):
# This used to raise a "SystemError: NULL result without error"
# because the range validation step was eating the exception

21
Lib/test/test_set.py
View File

@ -9,6 +9,7 @@ from random import randrange, shuffle
import sys
import warnings
import collections
import collections.abc
class PassThru(Exception):
pass
@ -234,6 +235,26 @@ class TestJointOps(unittest.TestCase):
dup = pickle.loads(p)
self.assertEqual(self.s.x, dup.x)
def test_iterator_pickling(self):
itorg = iter(self.s)
data = self.thetype(self.s)
d = pickle.dumps(itorg)
it = pickle.loads(d)
# Set iterators unpickle as list iterators due to the
# undefined order of set items.
# self.assertEqual(type(itorg), type(it))
self.assertTrue(isinstance(it, collections.abc.Iterator))
self.assertEqual(self.thetype(it), data)
it = pickle.loads(d)
try:
drop = next(it)
except StopIteration:
return
d = pickle.dumps(it)
it = pickle.loads(d)
self.assertEqual(self.thetype(it), data - self.thetype((drop,)))
def test_deepcopy(self):
class Tracer:
def __init__(self, value):

29
Lib/test/test_tuple.py
View File

@ -1,6 +1,7 @@
from test import support, seq_tests
import gc
import pickle
class TupleTest(seq_tests.CommonTest):
type2test = tuple
@ -164,6 +165,34 @@ class TupleTest(seq_tests.CommonTest):
check(10) # check our checking code
check(1000000)
def test_iterator_pickle(self):
# Userlist iterators don't support pickling yet since
# they are based on generators.
data = self.type2test([4, 5, 6, 7])
itorg = iter(data)
d = pickle.dumps(itorg)
it = pickle.loads(d)
self.assertEqual(type(itorg), type(it))
self.assertEqual(self.type2test(it), self.type2test(data))
it = pickle.loads(d)
next(it)
d = pickle.dumps(it)
self.assertEqual(self.type2test(it), self.type2test(data)[1:])
def test_reversed_pickle(self):
data = self.type2test([4, 5, 6, 7])
itorg = reversed(data)
d = pickle.dumps(itorg)
it = pickle.loads(d)
self.assertEqual(type(itorg), type(it))
self.assertEqual(self.type2test(it), self.type2test(reversed(data)))
it = pickle.loads(d)
next(it)
d = pickle.dumps(it)
self.assertEqual(self.type2test(it), self.type2test(reversed(data))[1:])
def test_main():
support.run_unittest(TupleTest)

93
Modules/_collectionsmodule.c
View File

@ -1121,6 +1121,35 @@ dequeiter_next(dequeiterobject *it)
return item;
}
static PyObject *
dequeiter_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
Py_ssize_t i, index=0;
PyObject *deque;
dequeiterobject *it;
if (!PyArg_ParseTuple(args, "O!|n", &deque_type, &deque, &index))
return NULL;
assert(type == &dequeiter_type);
it = (dequeiterobject*)deque_iter((dequeobject *)deque);
if (!it)
return NULL;
/* consume items from the queue */
for(i=0; i<index; i++) {
PyObject *item = dequeiter_next(it);
if (item) {
Py_DECREF(item);
} else {
if (it->counter) {
Py_DECREF(it);
return NULL;
} else
break;
}
}
return (PyObject*)it;
}
static PyObject *
dequeiter_len(dequeiterobject *it)
{
@ -1129,14 +1158,21 @@ dequeiter_len(dequeiterobject *it)
PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(it)).");
static PyObject *
dequeiter_reduce(dequeiterobject *it)
{
return Py_BuildValue("O(On)", Py_TYPE(it), it->deque, it->deque->len - it->counter);
}
static PyMethodDef dequeiter_methods[] = {
{"__length_hint__", (PyCFunction)dequeiter_len, METH_NOARGS, length_hint_doc},
{"__reduce__", (PyCFunction)dequeiter_reduce, METH_NOARGS, reduce_doc},
{NULL, NULL} /* sentinel */
};
static PyTypeObject dequeiter_type = {
PyVarObject_HEAD_INIT(NULL, 0)
"deque_iterator", /* tp_name */
"_collections._deque_iterator", /* tp_name */
sizeof(dequeiterobject), /* tp_basicsize */
0, /* tp_itemsize */
/* methods */
@ -1164,6 +1200,16 @@ static PyTypeObject dequeiter_type = {
PyObject_SelfIter, /* tp_iter */
(iternextfunc)dequeiter_next, /* tp_iternext */
dequeiter_methods, /* tp_methods */
0, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
dequeiter_new, /* tp_new */
0,
};
@ -1217,9 +1263,38 @@ dequereviter_next(dequeiterobject *it)
return item;
}
static PyObject *
dequereviter_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
Py_ssize_t i, index=0;
PyObject *deque;
dequeiterobject *it;
if (!PyArg_ParseTuple(args, "O!|n", &deque_type, &deque, &index))
return NULL;
assert(type == &dequereviter_type);
it = (dequeiterobject*)deque_reviter((dequeobject *)deque);
if (!it)
return NULL;
/* consume items from the queue */
for(i=0; i<index; i++) {
PyObject *item = dequereviter_next(it);
if (item) {
Py_DECREF(item);
} else {
if (it->counter) {
Py_DECREF(it);
return NULL;
} else
break;
}
}
return (PyObject*)it;
}
static PyTypeObject dequereviter_type = {
PyVarObject_HEAD_INIT(NULL, 0)
"deque_reverse_iterator", /* tp_name */
"_collections._deque_reverse_iterator", /* tp_name */
sizeof(dequeiterobject), /* tp_basicsize */
0, /* tp_itemsize */
/* methods */
@ -1247,6 +1322,16 @@ static PyTypeObject dequereviter_type = {
PyObject_SelfIter, /* tp_iter */
(iternextfunc)dequereviter_next, /* tp_iternext */
dequeiter_methods, /* tp_methods */
0, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
dequereviter_new, /* tp_new */
0,
};
@ -1653,9 +1738,13 @@ PyInit__collections(void)
if (PyType_Ready(&dequeiter_type) < 0)
return NULL;
Py_INCREF(&dequeiter_type);
PyModule_AddObject(m, "_deque_iterator", (PyObject *)&dequeiter_type);
if (PyType_Ready(&dequereviter_type) < 0)
return NULL;
Py_INCREF(&dequereviter_type);
PyModule_AddObject(m, "_deque_reverse_iterator", (PyObject *)&dequereviter_type);
return m;
}

30
Modules/arraymodule.c
View File

@ -2753,6 +2753,34 @@ arrayiter_traverse(arrayiterobject *it, visitproc visit, void *arg)
return 0;
}
static PyObject *
arrayiter_reduce(arrayiterobject *it)
{
return Py_BuildValue("N(O)n", _PyIter_GetBuiltin("iter"),
it->ao, it->index);
}
static PyObject *
arrayiter_setstate(arrayiterobject *it, PyObject *state)
{
Py_ssize_t index = PyLong_AsSsize_t(state);
if (index == -1 && PyErr_Occurred())
return NULL;
if (index < 0)
index = 0;
it->index = index;
Py_RETURN_NONE;
}
PyDoc_STRVAR(setstate_doc, "Set state information for unpickling.");
static PyMethodDef arrayiter_methods[] = {
{"__reduce__", (PyCFunction)arrayiter_reduce, METH_NOARGS,
reduce_doc},
{"__setstate__", (PyCFunction)arrayiter_setstate, METH_O,
setstate_doc},
{NULL, NULL} /* sentinel */
};
static PyTypeObject PyArrayIter_Type = {
PyVarObject_HEAD_INIT(NULL, 0)
"arrayiterator", /* tp_name */
@ -2782,7 +2810,7 @@ static PyTypeObject PyArrayIter_Type = {
0, /* tp_weaklistoffset */
PyObject_SelfIter, /* tp_iter */
(iternextfunc)arrayiter_next, /* tp_iternext */
0, /* tp_methods */
arrayiter_methods, /* tp_methods */
};

890
Modules/itertoolsmodule.c
View File

File diff suppressed because it is too large Load Diff

36
Objects/bytearrayobject.c
View File

@ -3003,7 +3003,7 @@ bytearrayiter_next(bytesiterobject *it)
}
static PyObject *
bytesarrayiter_length_hint(bytesiterobject *it)
bytearrayiter_length_hint(bytesiterobject *it)
{
Py_ssize_t len = 0;
if (it->it_seq)
@ -3014,9 +3014,41 @@ bytesarrayiter_length_hint(bytesiterobject *it)
PyDoc_STRVAR(length_hint_doc,
"Private method returning an estimate of len(list(it)).");
static PyObject *
bytearrayiter_reduce(bytesiterobject *it)
{
if (it->it_seq != NULL) {
return Py_BuildValue("N(O)n", _PyIter_GetBuiltin("iter"),
it->it_seq, it->it_index);
} else {
PyObject *u = PyUnicode_FromUnicode(NULL, 0);
if (u == NULL)
return NULL;
return Py_BuildValue("N(N)", _PyIter_GetBuiltin("iter"), u);
}
}
static PyObject *
bytearrayiter_setstate(bytesiterobject *it, PyObject *state)
{
Py_ssize_t index = PyLong_AsSsize_t(state);
if (index == -1 && PyErr_Occurred())
return NULL;
if (index < 0)
index = 0;
it->it_index = index;
Py_RETURN_NONE;
}
PyDoc_STRVAR(setstate_doc, "Set state information for unpickling.");
static PyMethodDef bytearrayiter_methods[] = {
{"__length_hint__", (PyCFunction)bytesarrayiter_length_hint, METH_NOARGS,
{"__length_hint__", (PyCFunction)bytearrayiter_length_hint, METH_NOARGS,
length_hint_doc},
{"__reduce__", (PyCFunction)bytearrayiter_reduce, METH_NOARGS,
reduce_doc},
{"__setstate__", (PyCFunction)bytearrayiter_setstate, METH_O,
setstate_doc},
{NULL, NULL} /* sentinel */
};

34
Objects/bytesobject.c
View File

@ -3074,9 +3074,43 @@ striter_len(striterobject *it)
PyDoc_STRVAR(length_hint_doc,
"Private method returning an estimate of len(list(it)).");
static PyObject *
striter_reduce(striterobject *it)
{
if (it->it_seq != NULL) {
return Py_BuildValue("N(O)n", _PyIter_GetBuiltin("iter"),
it->it_seq, it->it_index);
} else {
PyObject *u = PyUnicode_FromUnicode(NULL, 0);
if (u == NULL)
return NULL;
return Py_BuildValue("N(N)", _PyIter_GetBuiltin("iter"), u);
}
}
PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");
static PyObject *
striter_setstate(striterobject *it, PyObject *state)
{
Py_ssize_t index = PyLong_AsSsize_t(state);
if (index == -1 && PyErr_Occurred())
return NULL;
if (index < 0)
index = 0;
it->it_index = index;
Py_RETURN_NONE;
}
PyDoc_STRVAR(setstate_doc, "Set state information for unpickling.");
static PyMethodDef striter_methods[] = {
{"__length_hint__", (PyCFunction)striter_len, METH_NOARGS,
length_hint_doc},
{"__reduce__", (PyCFunction)striter_reduce, METH_NOARGS,
reduce_doc},
{"__setstate__", (PyCFunction)striter_setstate, METH_O,
setstate_doc},
{NULL, NULL} /* sentinel */
};

53
Objects/dictobject.c
View File

@ -2323,9 +2323,16 @@ dictiter_len(dictiterobject *di)
PyDoc_STRVAR(length_hint_doc,
"Private method returning an estimate of len(list(it)).");
static PyObject *
dictiter_reduce(dictiterobject *di);
PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");
static PyMethodDef dictiter_methods[] = {
{"__length_hint__", (PyCFunction)dictiter_len, METH_NOARGS,
length_hint_doc},
{"__reduce__", (PyCFunction)dictiter_reduce, METH_NOARGS,
reduce_doc},
{NULL, NULL} /* sentinel */
};
@ -2560,6 +2567,52 @@ PyTypeObject PyDictIterItem_Type = {
};
static PyObject *
dictiter_reduce(dictiterobject *di)
{
PyObject *list;
dictiterobject tmp;
list = PyList_New(0);
if (!list)
return NULL;
/* copy the itertor state */
tmp = *di;
Py_XINCREF(tmp.di_dict);
/* iterate the temporary into a list */
for(;;) {
PyObject *element = 0;
if (Py_TYPE(di) == &PyDictIterItem_Type)
element = dictiter_iternextitem(&tmp);
else if (Py_TYPE(di) == &PyDictIterKey_Type)
element = dictiter_iternextkey(&tmp);
else if (Py_TYPE(di) == &PyDictIterValue_Type)
element = dictiter_iternextvalue(&tmp);
else
assert(0);
if (element) {
if (PyList_Append(list, element)) {
Py_DECREF(element);
Py_DECREF(list);
Py_XDECREF(tmp.di_dict);
return NULL;
}
Py_DECREF(element);
} else
break;
}
Py_XDECREF(tmp.di_dict);
/* check for error */
if (tmp.di_dict != NULL) {
/* we have an error */
Py_DECREF(list);
return NULL;
}
return Py_BuildValue("N(N)", _PyIter_GetBuiltin("iter"), list);
}
/***********************************************/
/* View objects for keys(), items(), values(). */
/***********************************************/

50
Objects/enumobject.c
View File

@ -158,6 +158,22 @@ enum_next(enumobject *en)
return result;
}
static PyObject *
enum_reduce(enumobject *en)
{
if (en->en_longindex != NULL)
return Py_BuildValue("O(OO)", Py_TYPE(en), en->en_sit, en->en_longindex);
else
return Py_BuildValue("O(On)", Py_TYPE(en), en->en_sit, en->en_index);
}
PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");
static PyMethodDef enum_methods[] = {
{"__reduce__", (PyCFunction)enum_reduce, METH_NOARGS, reduce_doc},
{NULL, NULL} /* sentinel */
};
PyDoc_STRVAR(enum_doc,
"enumerate(iterable[, start]) -> iterator for index, value of iterable\n"
"\n"
@ -197,7 +213,7 @@ PyTypeObject PyEnum_Type = {
0, /* tp_weaklistoffset */
PyObject_SelfIter, /* tp_iter */
(iternextfunc)enum_next, /* tp_iternext */
0, /* tp_methods */
enum_methods, /* tp_methods */
0, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
@ -319,8 +335,40 @@ reversed_len(reversedobject *ro)
PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(it)).");
static PyObject *
reversed_reduce(reversedobject *ro)
{
if (ro->seq)
return Py_BuildValue("O(O)n", Py_TYPE(ro), ro->seq, ro->index);
else
return Py_BuildValue("O(())", Py_TYPE(ro));
}
static PyObject *
reversed_setstate(reversedobject *ro, PyObject *state)
{
Py_ssize_t index = PyLong_AsSsize_t(state);
if (index == -1 && PyErr_Occurred())
return NULL;
if (ro->seq != 0) {
Py_ssize_t n = PySequence_Size(ro->seq);
if (n < 0)
return NULL;
if (index < -1)
index = -1;
else if (index > n-1)
index = n-1;
ro->index = index;
}
Py_RETURN_NONE;
}
PyDoc_STRVAR(setstate_doc, "Set state information for unpickling.");
static PyMethodDef reversediter_methods[] = {
{"__length_hint__", (PyCFunction)reversed_len, METH_NOARGS, length_hint_doc},
{"__reduce__", (PyCFunction)reversed_reduce, METH_NOARGS, reduce_doc},
{"__setstate__", (PyCFunction)reversed_setstate, METH_O, setstate_doc},
{NULL, NULL} /* sentinel */
};

60
Objects/iterobject.c
View File

@ -2,6 +2,19 @@
#include "Python.h"
/* Convenience function to get builtins.iter or builtins.reversed */
PyObject *
_PyIter_GetBuiltin(const char *iter)
{
PyObject *mod, *attr;
mod = PyImport_ImportModule("builtins");
if (mod == NULL)
return NULL;
attr = PyObject_GetAttrString(mod, iter);
Py_DECREF(mod);
return attr;
}
typedef struct {
PyObject_HEAD
long it_index;
@ -88,8 +101,38 @@ iter_len(seqiterobject *it)
PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(it)).");
static PyObject *
iter_reduce(seqiterobject *it)
{
if (it->it_seq != NULL)
return Py_BuildValue("N(O)n", _PyIter_GetBuiltin("iter"),
it->it_seq, it->it_index);
else
return Py_BuildValue("N(())", _PyIter_GetBuiltin("iter"));
}
PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");
static PyObject *
iter_setstate(seqiterobject *it, PyObject *state)
{
Py_ssize_t index = PyLong_AsSsize_t(state);
if (index == -1 && PyErr_Occurred())
return NULL;
if (it->it_seq != NULL) {
if (index < 0)
index = 0;
it->it_index = index;
}
Py_RETURN_NONE;
}
PyDoc_STRVAR(setstate_doc, "Set state information for unpickling.");
static PyMethodDef seqiter_methods[] = {
{"__length_hint__", (PyCFunction)iter_len, METH_NOARGS, length_hint_doc},
{"__reduce__", (PyCFunction)iter_reduce, METH_NOARGS, reduce_doc},
{"__setstate__", (PyCFunction)iter_setstate, METH_O, setstate_doc},
{NULL, NULL} /* sentinel */
};
@ -195,6 +238,21 @@ calliter_iternext(calliterobject *it)
return NULL;
}
static PyObject *
calliter_reduce(calliterobject *it)
{
if (it->it_callable != NULL && it->it_sentinel != NULL)
return Py_BuildValue("N(OO)", _PyIter_GetBuiltin("iter"),
it->it_callable, it->it_sentinel);
else
return Py_BuildValue("N(())", _PyIter_GetBuiltin("iter"));
}
static PyMethodDef calliter_methods[] = {
{"__reduce__", (PyCFunction)calliter_reduce, METH_NOARGS, reduce_doc},
{NULL, NULL} /* sentinel */
};
PyTypeObject PyCallIter_Type = {
PyVarObject_HEAD_INIT(&PyType_Type, 0)
"callable_iterator", /* tp_name */
@ -224,7 +282,7 @@ PyTypeObject PyCallIter_Type = {
0, /* tp_weaklistoffset */
PyObject_SelfIter, /* tp_iter */
(iternextfunc)calliter_iternext, /* tp_iternext */
0, /* tp_methods */
calliter_methods, /* tp_methods */
};

80
Objects/listobject.c
View File

@ -2660,11 +2660,18 @@ static void listiter_dealloc(listiterobject *);
static int listiter_traverse(listiterobject *, visitproc, void *);
static PyObject *listiter_next(listiterobject *);
static PyObject *listiter_len(listiterobject *);
static PyObject *listiter_reduce_general(void *_it, int forward);
static PyObject *listiter_reduce(listiterobject *);
static PyObject *listiter_setstate(listiterobject *, PyObject *state);
PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(it)).");
PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");
PyDoc_STRVAR(setstate_doc, "Set state information for unpickling.");
static PyMethodDef listiter_methods[] = {
{"__length_hint__", (PyCFunction)listiter_len, METH_NOARGS, length_hint_doc},
{"__reduce__", (PyCFunction)listiter_reduce, METH_NOARGS, reduce_doc},
{"__setstate__", (PyCFunction)listiter_setstate, METH_O, setstate_doc},
{NULL, NULL} /* sentinel */
};
@ -2771,6 +2778,27 @@ listiter_len(listiterobject *it)
}
return PyLong_FromLong(0);
}
static PyObject *
listiter_reduce(listiterobject *it)
{
return listiter_reduce_general(it, 1);
}
static PyObject *
listiter_setstate(listiterobject *it, PyObject *state)
{
long index = PyLong_AsLong(state);
if (index == -1 && PyErr_Occurred())
return NULL;
if (it->it_seq != NULL) {
if (index < 0)
index = 0;
it->it_index = index;
}
Py_RETURN_NONE;
}
/*********************** List Reverse Iterator **************************/
typedef struct {
@ -2784,9 +2812,13 @@ static void listreviter_dealloc(listreviterobject *);
static int listreviter_traverse(listreviterobject *, visitproc, void *);
static PyObject *listreviter_next(listreviterobject *);
static PyObject *listreviter_len(listreviterobject *);
static PyObject *listreviter_reduce(listreviterobject *);
static PyObject *listreviter_setstate(listreviterobject *, PyObject *);
static PyMethodDef listreviter_methods[] = {
{"__length_hint__", (PyCFunction)listreviter_len, METH_NOARGS, length_hint_doc},
{"__reduce__", (PyCFunction)listreviter_reduce, METH_NOARGS, reduce_doc},
{"__setstate__", (PyCFunction)listreviter_setstate, METH_O, setstate_doc},
{NULL, NULL} /* sentinel */
};
@ -2883,3 +2915,51 @@ listreviter_len(listreviterobject *it)
len = 0;
return PyLong_FromSsize_t(len);
}
static PyObject *
listreviter_reduce(listreviterobject *it)
{
return listiter_reduce_general(it, 0);
}
static PyObject *
listreviter_setstate(listreviterobject *it, PyObject *state)
{
Py_ssize_t index = PyLong_AsSsize_t(state);
if (index == -1 && PyErr_Occurred())
return NULL;
if (it->it_seq != NULL) {
if (index < -1)
index = -1;
else if (index > PyList_GET_SIZE(it->it_seq) - 1)
index = PyList_GET_SIZE(it->it_seq) - 1;
it->it_index = index;
}
Py_RETURN_NONE;
}
/* common pickling support */
static PyObject *
listiter_reduce_general(void *_it, int forward)
{
PyObject *list;
/* the objects are not the same, index is of different types! */
if (forward) {
listiterobject *it = (listiterobject *)_it;
if (it->it_seq)
return Py_BuildValue("N(O)l", _PyIter_GetBuiltin("iter"),
it->it_seq, it->it_index);
} else {
listreviterobject *it = (listreviterobject *)_it;
if (it->it_seq)
return Py_BuildValue("N(O)n", _PyIter_GetBuiltin("reversed"),
it->it_seq, it->it_index);
}
/* empty iterator, create an empty list */
list = PyList_New(0);
if (list == NULL)
return NULL;
return Py_BuildValue("N(N)", _PyIter_GetBuiltin("iter"), list);
}

92
Objects/rangeobject.c
View File

@ -964,9 +964,59 @@ rangeiter_len(rangeiterobject *r)
PyDoc_STRVAR(length_hint_doc,
"Private method returning an estimate of len(list(it)).");
static PyObject *
rangeiter_reduce(rangeiterobject *r)
{
PyObject *start=NULL, *stop=NULL, *step=NULL;
PyObject *range;
/* create a range object for pickling */
start = PyLong_FromLong(r->start);
if (start == NULL)
goto err;
stop = PyLong_FromLong(r->start + r->len * r->step);
if (stop == NULL)
goto err;
step = PyLong_FromLong(r->step);
if (step == NULL)
goto err;
range = (PyObject*)make_range_object(&PyRange_Type,
start, stop, step);
if (range == NULL)
goto err;
/* return the result */
return Py_BuildValue("N(N)i", _PyIter_GetBuiltin("iter"), range, r->index);
err:
Py_XDECREF(start);
Py_XDECREF(stop);
Py_XDECREF(step);
return NULL;
}
static PyObject *
rangeiter_setstate(rangeiterobject *r, PyObject *state)
{
long index = PyLong_AsLong(state);
if (index == -1 && PyErr_Occurred())
return NULL;
if (index < 0 || index >= r->len) {
PyErr_SetString(PyExc_ValueError, "index out of range");
return NULL;
}
r->index = index;
Py_RETURN_NONE;
}
PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");
PyDoc_STRVAR(setstate_doc, "Set state information for unpickling.");
static PyMethodDef rangeiter_methods[] = {
{"__length_hint__", (PyCFunction)rangeiter_len, METH_NOARGS,
length_hint_doc},
{"__reduce__", (PyCFunction)rangeiter_reduce, METH_NOARGS,
reduce_doc},
{"__setstate__", (PyCFunction)rangeiter_setstate, METH_O,
setstate_doc},
{NULL, NULL} /* sentinel */
};
@ -1095,9 +1145,51 @@ longrangeiter_len(longrangeiterobject *r, PyObject *no_args)
return PyNumber_Subtract(r->len, r->index);
}
static PyObject *
longrangeiter_reduce(longrangeiterobject *r)
{
PyObject *product, *stop=NULL;
PyObject *range;
/* create a range object for pickling. Must calculate the "stop" value */
product = PyNumber_Multiply(r->len, r->step);
if (product == NULL)
return NULL;
stop = PyNumber_Add(r->start, product);
Py_DECREF(product);
if (stop == NULL)
return NULL;
Py_INCREF(r->start);
Py_INCREF(r->step);
range = (PyObject*)make_range_object(&PyRange_Type,
r->start, stop, r->step);
if (range == NULL) {
Py_DECREF(r->start);
Py_DECREF(stop);
Py_DECREF(r->step);
return NULL;
}
/* return the result */
return Py_BuildValue("N(N)O", _PyIter_GetBuiltin("iter"), range, r->index);
}
static PyObject *
longrangeiter_setstate(longrangeiterobject *r, PyObject *state)
{
Py_CLEAR(r->index);
r->index = state;
Py_INCREF(r->index);
Py_RETURN_NONE;
}
static PyMethodDef longrangeiter_methods[] = {
{"__length_hint__", (PyCFunction)longrangeiter_len, METH_NOARGS,
length_hint_doc},
{"__reduce__", (PyCFunction)longrangeiter_reduce, METH_NOARGS,
reduce_doc},
{"__setstate__", (PyCFunction)longrangeiter_setstate, METH_O,
setstate_doc},
{NULL, NULL} /* sentinel */
};

45
Objects/setobject.c
View File

@ -819,8 +819,51 @@ setiter_len(setiterobject *si)
PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(it)).");
static PyObject *setiter_iternext(setiterobject *si);
static PyObject *
setiter_reduce(setiterobject *si)
{
PyObject *list;
setiterobject tmp;
list = PyList_New(0);
if (!list)
return NULL;
/* copy the itertor state */
tmp = *si;
Py_XINCREF(tmp.si_set);
/* iterate the temporary into a list */
for(;;) {
PyObject *element = setiter_iternext(&tmp);
if (element) {
if (PyList_Append(list, element)) {
Py_DECREF(element);
Py_DECREF(list);
Py_XDECREF(tmp.si_set);
return NULL;
}
Py_DECREF(element);
} else
break;
}
Py_XDECREF(tmp.si_set);
/* check for error */
if (tmp.si_set != NULL) {
/* we have an error */
Py_DECREF(list);
return NULL;
}
return Py_BuildValue("N(N)", _PyIter_GetBuiltin("iter"), list);
}
PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");
static PyMethodDef setiter_methods[] = {
{"__length_hint__", (PyCFunction)setiter_len, METH_NOARGS, length_hint_doc},
{"__reduce__", (PyCFunction)setiter_reduce, METH_NOARGS, reduce_doc},
{NULL, NULL} /* sentinel */
};
@ -1964,8 +2007,6 @@ done:
return result;
}
PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");
static PyObject *
set_sizeof(PySetObject *so)
{

31
Objects/tupleobject.c
View File

@ -967,8 +967,39 @@ tupleiter_len(tupleiterobject *it)
PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(it)).");
static PyObject *
tupleiter_reduce(tupleiterobject *it)
{
if (it->it_seq)
return Py_BuildValue("N(O)l", _PyIter_GetBuiltin("iter"),
it->it_seq, it->it_index);
else
return Py_BuildValue("N(())", _PyIter_GetBuiltin("iter"));
}
static PyObject *
tupleiter_setstate(tupleiterobject *it, PyObject *state)
{
long index = PyLong_AsLong(state);
if (index == -1 && PyErr_Occurred())
return NULL;
if (it->it_seq != NULL) {
if (index < 0)
index = 0;
else if (it->it_seq != NULL && index > PyTuple_GET_SIZE(it->it_seq))
index = PyTuple_GET_SIZE(it->it_seq);
it->it_index = index;
}
Py_RETURN_NONE;
}
PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");
PyDoc_STRVAR(setstate_doc, "Set state information for unpickling.");
static PyMethodDef tupleiter_methods[] = {
{"__length_hint__", (PyCFunction)tupleiter_len, METH_NOARGS, length_hint_doc},
{"__reduce__", (PyCFunction)tupleiter_reduce, METH_NOARGS, reduce_doc},
{"__setstate__", (PyCFunction)tupleiter_setstate, METH_O, setstate_doc},
{NULL, NULL} /* sentinel */
};

34
Objects/unicodeobject.c
View File

@ -14382,9 +14382,43 @@ unicodeiter_len(unicodeiterobject *it)
PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(it)).");
static PyObject *
unicodeiter_reduce(unicodeiterobject *it)
{
if (it->it_seq != NULL) {
return Py_BuildValue("N(O)n", _PyIter_GetBuiltin("iter"),
it->it_seq, it->it_index);
} else {
PyObject *u = PyUnicode_FromUnicode(NULL, 0);
if (u == NULL)
return NULL;
return Py_BuildValue("N(N)", _PyIter_GetBuiltin("iter"), u);
}
}
PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");
static PyObject *
unicodeiter_setstate(unicodeiterobject *it, PyObject *state)
{
Py_ssize_t index = PyLong_AsSsize_t(state);
if (index == -1 && PyErr_Occurred())
return NULL;
if (index < 0)
index = 0;
it->it_index = index;
Py_RETURN_NONE;
}
PyDoc_STRVAR(setstate_doc, "Set state information for unpickling.");
static PyMethodDef unicodeiter_methods[] = {
{"__length_hint__", (PyCFunction)unicodeiter_len, METH_NOARGS,
length_hint_doc},
{"__reduce__", (PyCFunction)unicodeiter_reduce, METH_NOARGS,
reduce_doc},
{"__setstate__", (PyCFunction)unicodeiter_setstate, METH_O,
setstate_doc},
{NULL, NULL} /* sentinel */
};

56
Python/bltinmodule.c
View File

@ -438,6 +438,19 @@ filter_next(filterobject *lz)
}
}
static PyObject *
filter_reduce(filterobject *lz)
{
return Py_BuildValue("O(OO)", Py_TYPE(lz), lz->func, lz->it);
}
PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");
static PyMethodDef filter_methods[] = {
{"__reduce__", (PyCFunction)filter_reduce, METH_NOARGS, reduce_doc},
{NULL, NULL} /* sentinel */
};
PyDoc_STRVAR(filter_doc,
"filter(function or None, iterable) --> filter object\n\
\n\
@ -474,7 +487,7 @@ PyTypeObject PyFilter_Type = {
0, /* tp_weaklistoffset */
PyObject_SelfIter, /* tp_iter */
(iternextfunc)filter_next, /* tp_iternext */
0, /* tp_methods */
filter_methods, /* tp_methods */
0, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
@ -1054,6 +1067,31 @@ map_next(mapobject *lz)
return result;
}
static PyObject *
map_reduce(mapobject *lz)
{
Py_ssize_t numargs = PyTuple_GET_SIZE(lz->iters);
PyObject *args = PyTuple_New(numargs+1);
Py_ssize_t i;
if (args == NULL)
return NULL;
Py_INCREF(lz->func);
PyTuple_SET_ITEM(args, 0, lz->func);
for (i = 0; i<numargs; i++){
PyObject *it = PyTuple_GET_ITEM(lz->iters, i);
Py_INCREF(it);
PyTuple_SET_ITEM(args, i+1, it);
}
return Py_BuildValue("ON", Py_TYPE(lz), args);
}
static PyMethodDef map_methods[] = {
{"__reduce__", (PyCFunction)map_reduce, METH_NOARGS, reduce_doc},
{NULL, NULL} /* sentinel */
};
PyDoc_STRVAR(map_doc,
"map(func, *iterables) --> map object\n\
\n\
@ -1090,7 +1128,7 @@ PyTypeObject PyMap_Type = {
0, /* tp_weaklistoffset */
PyObject_SelfIter, /* tp_iter */
(iternextfunc)map_next, /* tp_iternext */
0, /* tp_methods */
map_methods, /* tp_methods */
0, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
@ -2238,6 +2276,18 @@ zip_next(zipobject *lz)
return result;
}
static PyObject *
zip_reduce(zipobject *lz)
{
/* Just recreate the zip with the internal iterator tuple */
return Py_BuildValue("OO", Py_TYPE(lz), lz->ittuple);
}
static PyMethodDef zip_methods[] = {
{"__reduce__", (PyCFunction)zip_reduce, METH_NOARGS, reduce_doc},
{NULL, NULL} /* sentinel */
};
PyDoc_STRVAR(zip_doc,
"zip(iter1 [,iter2 [...]]) --> zip object\n\
\n\
@ -2276,7 +2326,7 @@ PyTypeObject PyZip_Type = {
0, /* tp_weaklistoffset */
PyObject_SelfIter, /* tp_iter */
(iternextfunc)zip_next, /* tp_iternext */
0, /* tp_methods */
zip_methods, /* tp_methods */
0, /* tp_members */
0, /* tp_getset */
0, /* tp_base */