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Issue #1717: Remove cmp. Stage 1: remove all uses of cmp and __cmp__ from 

the standard library and tests.
This commit is contained in:
Mark Dickinson 2009-01-27 18:17:45 +00:00
parent 191e850053
commit a56c467ac3
32 changed files with 210 additions and 216 deletions
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2
Lib/collections.py
View File

@ -436,8 +436,6 @@ class UserList(MutableSequence):
def __ge__(self, other): return self.data >= self.__cast(other)
def __cast(self, other):
return other.data if isinstance(other, UserList) else other
def __cmp__(self, other):
return cmp(self.data, self.__cast(other))
def __contains__(self, item): return item in self.data
def __len__(self): return len(self.data)
def __getitem__(self, i): return self.data[i]

6
Lib/ctypes/test/test_libc.py
View File

@ -5,6 +5,10 @@ import _ctypes_test
lib = CDLL(_ctypes_test.__file__)
def three_way_cmp(x, y):
"""Return -1 if x < y, 0 if x == y and 1 if x > y"""
return (x > y) - (x < y)
class LibTest(unittest.TestCase):
def test_sqrt(self):
lib.my_sqrt.argtypes = c_double,
@ -19,7 +23,7 @@ class LibTest(unittest.TestCase):
lib.my_qsort.restype = None
def sort(a, b):
return cmp(a[0], b[0])
return three_way_cmp(a[0], b[0])
chars = create_string_buffer("spam, spam, and spam")
lib.my_qsort(chars, len(chars)-1, sizeof(c_char), comparefunc(sort))

63
Lib/distutils/version.py
View File

@ -21,7 +21,7 @@ Every version number class implements the following interface:
an equivalent string -- ie. one that will generate an equivalent
version number instance)
* __repr__ generates Python code to recreate the version number instance
* __cmp__ compares the current instance with either another instance
* _cmp compares the current instance with either another instance
of the same class or a string (which will be parsed to an instance
of the same class, thus must follow the same rules)
"""
@ -32,7 +32,7 @@ class Version:
"""Abstract base class for version numbering classes. Just provides
constructor (__init__) and reproducer (__repr__), because those
seem to be the same for all version numbering classes; and route
rich comparisons to __cmp__.
rich comparisons to _cmp.
"""
def __init__ (self, vstring=None):
@ -43,37 +43,37 @@ class Version:
return "%s ('%s')" % (self.__class__.__name__, str(self))
def __eq__(self, other):
c = self.__cmp__(other)
c = self._cmp(other)
if c is NotImplemented:
return c
return c == 0
def __ne__(self, other):
c = self.__cmp__(other)
c = self._cmp(other)
if c is NotImplemented:
return c
return c != 0
def __lt__(self, other):
c = self.__cmp__(other)
c = self._cmp(other)
if c is NotImplemented:
return c
return c < 0
def __le__(self, other):
c = self.__cmp__(other)
c = self._cmp(other)
if c is NotImplemented:
return c
return c <= 0
def __gt__(self, other):
c = self.__cmp__(other)
c = self._cmp(other)
if c is NotImplemented:
return c
return c > 0
def __ge__(self, other):
c = self.__cmp__(other)
c = self._cmp(other)
if c is NotImplemented:
return c
return c >= 0
@ -91,7 +91,7 @@ class Version:
# (if not identical to) the string supplied to parse
# __repr__ (self) - generate Python code to recreate
# the instance
# __cmp__ (self, other) - compare two version numbers ('other' may
# _cmp (self, other) - compare two version numbers ('other' may
# be an unparsed version string, or another
# instance of your version class)
@ -169,30 +169,39 @@ class StrictVersion (Version):
return vstring
def __cmp__ (self, other):
def _cmp (self, other):
if isinstance(other, str):
other = StrictVersion(other)
compare = cmp(self.version, other.version)
if (compare == 0): # have to compare prerelease
# case 1: neither has prerelease; they're equal
# case 2: self has prerelease, other doesn't; other is greater
# case 3: self doesn't have prerelease, other does: self is greater
# case 4: both have prerelease: must compare them!
if (not self.prerelease and not other.prerelease):
return 0
elif (self.prerelease and not other.prerelease):
if self.version != other.version:
# numeric versions don't match
# prerelease stuff doesn't matter
if self.version < other.version:
return -1
elif (not self.prerelease and other.prerelease):
else:
return 1
elif (self.prerelease and other.prerelease):
return cmp(self.prerelease, other.prerelease)
else: # numeric versions don't match --
return compare # prerelease stuff doesn't matter
# have to compare prerelease
# case 1: neither has prerelease; they're equal
# case 2: self has prerelease, other doesn't; other is greater
# case 3: self doesn't have prerelease, other does: self is greater
# case 4: both have prerelease: must compare them!
if (not self.prerelease and not other.prerelease):
return 0
elif (self.prerelease and not other.prerelease):
return -1
elif (not self.prerelease and other.prerelease):
return 1
elif (self.prerelease and other.prerelease):
if self.prerelease == other.prerelease:
return 0
elif self.prerelease < other.prerelease:
return -1
else:
return 1
else:
assert False, "never get here"
# end class StrictVersion
@ -325,7 +334,7 @@ class LooseVersion (Version):
return "LooseVersion ('%s')" % str(self)
def __cmp__ (self, other):
def _cmp (self, other):
if isinstance(other, str):
other = LooseVersion(other)

2
Lib/heapq.py
View File

@ -262,7 +262,7 @@ def _siftdown(heap, startpos, pos):
#
# Cutting the # of comparisons is important, since these routines have no
# way to extract "the priority" from an array element, so that intelligence
# is likely to be hiding in custom __cmp__ methods, or in array elements
# is likely to be hiding in custom comparison methods, or in array elements
# storing (priority, record) tuples. Comparisons are thus potentially
# expensive.
#

2
Lib/locale.py
View File

@ -31,7 +31,7 @@ def _strcoll(a,b):
""" strcoll(string,string) -> int.
Compares two strings according to the locale.
"""
return cmp(a,b)
return (a > b) - (a < b)
def _strxfrm(s):
""" strxfrm(string) -> string.

2
Lib/pydoc.py
View File

@ -1643,7 +1643,7 @@ class Helper:
'SPECIALMETHODS': ('specialnames', 'BASICMETHODS ATTRIBUTEMETHODS '
'CALLABLEMETHODS SEQUENCEMETHODS1 MAPPINGMETHODS '
'SEQUENCEMETHODS2 NUMBERMETHODS CLASSES'),
'BASICMETHODS': ('customization', 'cmp hash repr str SPECIALMETHODS'),
'BASICMETHODS': ('customization', 'hash repr str SPECIALMETHODS'),
'ATTRIBUTEMETHODS': ('attribute-access', 'ATTRIBUTES SPECIALMETHODS'),
'CALLABLEMETHODS': ('callable-types', 'CALLS SPECIALMETHODS'),
'SEQUENCEMETHODS': ('sequence-types', 'SEQUENCES SEQUENCEMETHODS2 '

10
Lib/sqlite3/test/hooks.py
View File

@ -42,7 +42,7 @@ class CollationTests(unittest.TestCase):
def CheckCreateCollationNotAscii(self):
con = sqlite.connect(":memory:")
try:
con.create_collation("collä", cmp)
con.create_collation("collä", lambda x, y: (x > y) - (x < y))
self.fail("should have raised a ProgrammingError")
except sqlite.ProgrammingError as e:
pass
@ -52,7 +52,7 @@ class CollationTests(unittest.TestCase):
return
def mycoll(x, y):
# reverse order
return -cmp(x, y)
return -((x > y) - (x < y))
con = sqlite.connect(":memory:")
con.create_collation("mycoll", mycoll)
@ -82,8 +82,8 @@ class CollationTests(unittest.TestCase):
Verify that the last one is actually used.
"""
con = sqlite.connect(":memory:")
con.create_collation("mycoll", cmp)
con.create_collation("mycoll", lambda x, y: -cmp(x, y))
con.create_collation("mycoll", lambda x, y: (x > y) - (x < y))
con.create_collation("mycoll", lambda x, y: -((x > y) - (x < y)))
result = con.execute("""
select x from (select 'a' as x union select 'b' as x) order by x collate mycoll
""").fetchall()
@ -96,7 +96,7 @@ class CollationTests(unittest.TestCase):
to use it.
"""
con = sqlite.connect(":memory:")
con.create_collation("mycoll", cmp)
con.create_collation("mycoll", lambda x, y: (x > y) - (x < y))
con.create_collation("mycoll", None)
try:
con.execute("select 'a' as x union select 'b' as x order by x collate mycoll")

4
Lib/test/crashers/loosing_mro_ref.py
View File

@ -10,7 +10,7 @@ class MyKey(object):
def __hash__(self):
return hash('mykey')
def __cmp__(self, other):
def __eq__(self, other):
# the following line decrefs the previous X.__mro__
X.__bases__ = (Base2,)
# trash all tuples of length 3, to make sure that the items of
@ -18,7 +18,7 @@ class MyKey(object):
z = []
for i in range(1000):
z.append((i, None, None))
return -1
return 0
class Base(object):

22
Lib/test/list_tests.py
View File

@ -439,13 +439,24 @@ class CommonTest(seq_tests.CommonTest):
self.assertRaises(TypeError, u.sort, 42, 42)
def revcmp(a, b):
return cmp(b, a)
if a == b:
return 0
elif a < b:
return 1
else: # a > b
return -1
u.sort(key=CmpToKey(revcmp))
self.assertEqual(u, self.type2test([2,1,0,-1,-2]))
# The following dumps core in unpatched Python 1.5:
def myComparison(x,y):
return cmp(x%3, y%7)
xmod, ymod = x%3, y%7
if xmod == ymod:
return 0
elif xmod < ymod:
return -1
else: # xmod > ymod
return 1
z = self.type2test(range(12))
z.sort(key=CmpToKey(myComparison))
@ -453,7 +464,12 @@ class CommonTest(seq_tests.CommonTest):
def selfmodifyingComparison(x,y):
z.append(1)
return cmp(x, y)
if x == y:
return 0
elif x < y:
return -1
else: # x > y
return 1
self.assertRaises(ValueError, z.sort, key=CmpToKey(selfmodifyingComparison))
self.assertRaises(TypeError, z.sort, 42, 42, 42, 42)

23
Lib/test/test_builtin.py
View File

@ -10,6 +10,7 @@ warnings.filterwarnings("ignore", "hex../oct.. of negative int",
FutureWarning, __name__)
warnings.filterwarnings("ignore", "integer argument expected",
DeprecationWarning, "unittest")
import builtins
class Squares:
@ -219,21 +220,9 @@ class BuiltinTest(unittest.TestCase):
self.assertRaises((OverflowError, ValueError), chr, 2**32)
def test_cmp(self):
self.assertEqual(cmp(-1, 1), -1)
self.assertEqual(cmp(1, -1), 1)
self.assertEqual(cmp(1, 1), 0)
# verify that circular objects are not handled
a = []; a.append(a)
b = []; b.append(b)
from collections import UserList
c = UserList(); c.append(c)
self.assertRaises(RuntimeError, cmp, a, b)
self.assertRaises(RuntimeError, cmp, b, c)
self.assertRaises(RuntimeError, cmp, c, a)
self.assertRaises(RuntimeError, cmp, a, c)
# okay, now break the cycles
a.pop(); b.pop(); c.pop()
self.assertRaises(TypeError, cmp)
# uncomment the following line once cmp has been removed
#self.assert_(not hasattr(builtins, "cmp"))
pass
def test_compile(self):
compile('print(1)\n', '', 'exec')
@ -736,10 +725,6 @@ class BuiltinTest(unittest.TestCase):
def __getitem__(self, index):
raise ValueError
self.assertRaises(ValueError, min, BadSeq())
class BadNumber:
def __cmp__(self, other):
raise ValueError
self.assertRaises(TypeError, min, (42, BadNumber()))
for stmt in (
"min(key=int)", # no args

21
Lib/test/test_contains.py
View File

@ -56,31 +56,16 @@ class TestContains(unittest.TestCase):
This class is designed to make sure that the contains code
works when the list is modified during the check.
"""
aList = range(15)
def __cmp__(self, other):
aList = list(range(15))
def __eq__(self, other):
if other == 12:
self.aList.remove(12)
self.aList.remove(13)
self.aList.remove(14)
return 1
return 0
self.assert_(Deviant1() not in Deviant1.aList)
class Deviant2:
"""Behaves strangely when compared
This class raises an exception during comparison. That in
turn causes the comparison to fail with a TypeError.
"""
def __cmp__(self, other):
if other == 4:
raise RuntimeError("gotcha")
try:
self.assert_(Deviant2() not in a)
except TypeError:
pass
def test_nonreflexive(self):
# containment and equality tests involving elements that are
# not necessarily equal to themselves

17
Lib/test/test_copy.py
View File

@ -2,10 +2,14 @@
import copy
import copyreg
from operator import le, lt, ge, gt, eq, ne
import unittest
from test import support
order_comparisons = le, lt, ge, gt
equality_comparisons = eq, ne
comparisons = order_comparisons + equality_comparisons
class TestCopy(unittest.TestCase):
# Attempt full line coverage of copy.py from top to bottom
@ -271,7 +275,8 @@ class TestCopy(unittest.TestCase):
x = []
x.append(x)
y = copy.deepcopy(x)
self.assertRaises(RuntimeError, cmp, y, x)
for op in comparisons:
self.assertRaises(RuntimeError, op, y, x)
self.assert_(y is not x)
self.assert_(y[0] is y)
self.assertEqual(len(y), 1)
@ -287,7 +292,8 @@ class TestCopy(unittest.TestCase):
x = ([],)
x[0].append(x)
y = copy.deepcopy(x)
self.assertRaises(RuntimeError, cmp, y, x)
for op in comparisons:
self.assertRaises(RuntimeError, op, y, x)
self.assert_(y is not x)
self.assert_(y[0] is not x[0])
self.assert_(y[0][0] is y)
@ -303,7 +309,10 @@ class TestCopy(unittest.TestCase):
x = {}
x['foo'] = x
y = copy.deepcopy(x)
self.assertRaises(TypeError, cmp, y, x)
for op in order_comparisons:
self.assertRaises(TypeError, op, y, x)
for op in equality_comparisons:
self.assertRaises(RuntimeError, op, y, x)
self.assert_(y is not x)
self.assert_(y['foo'] is y)
self.assertEqual(len(y), 1)

36
Lib/test/test_datetime.py
View File

@ -7,6 +7,8 @@ import os
import pickle
import unittest
from operator import lt, le, gt, ge, eq, ne
from test import support
from datetime import MINYEAR, MAXYEAR
@ -156,9 +158,6 @@ class HarmlessMixedComparison:
self.assertRaises(TypeError, lambda: () > me)
self.assertRaises(TypeError, lambda: () >= me)
self.assertRaises(TypeError, cmp, (), me)
self.assertRaises(TypeError, cmp, me, ())
#############################################################################
# timedelta tests
@ -309,8 +308,6 @@ class TestTimeDelta(HarmlessMixedComparison, unittest.TestCase):
self.failUnless(not t1 != t2)
self.failUnless(not t1 < t2)
self.failUnless(not t1 > t2)
self.assertEqual(cmp(t1, t2), 0)
self.assertEqual(cmp(t2, t1), 0)
for args in (3, 3, 3), (2, 4, 4), (2, 3, 5):
t2 = timedelta(*args) # this is larger than t1
@ -326,8 +323,6 @@ class TestTimeDelta(HarmlessMixedComparison, unittest.TestCase):
self.failUnless(not t2 < t1)
self.failUnless(not t1 >= t2)
self.failUnless(not t2 <= t1)
self.assertEqual(cmp(t1, t2), -1)
self.assertEqual(cmp(t2, t1), 1)
for badarg in OTHERSTUFF:
self.assertEqual(t1 == badarg, False)
@ -953,8 +948,6 @@ class TestDate(HarmlessMixedComparison, unittest.TestCase):
self.failUnless(not t1 != t2)
self.failUnless(not t1 < t2)
self.failUnless(not t1 > t2)
self.assertEqual(cmp(t1, t2), 0)
self.assertEqual(cmp(t2, t1), 0)
for args in (3, 3, 3), (2, 4, 4), (2, 3, 5):
t2 = self.theclass(*args) # this is larger than t1
@ -970,8 +963,6 @@ class TestDate(HarmlessMixedComparison, unittest.TestCase):
self.failUnless(not t2 < t1)
self.failUnless(not t1 >= t2)
self.failUnless(not t2 <= t1)
self.assertEqual(cmp(t1, t2), -1)
self.assertEqual(cmp(t2, t1), 1)
for badarg in OTHERSTUFF:
self.assertEqual(t1 == badarg, False)
@ -999,8 +990,6 @@ class TestDate(HarmlessMixedComparison, unittest.TestCase):
# But the ordering is undefined
self.assertRaises(TypeError, lambda: our < 1)
self.assertRaises(TypeError, lambda: 1 < our)
self.assertRaises(TypeError, cmp, our, 1)
self.assertRaises(TypeError, cmp, 1, our)
# Repeat those tests with a different class
@ -1014,8 +1003,6 @@ class TestDate(HarmlessMixedComparison, unittest.TestCase):
self.assertEqual(their != our, True)
self.assertRaises(TypeError, lambda: our < their)
self.assertRaises(TypeError, lambda: their < our)
self.assertRaises(TypeError, cmp, our, their)
self.assertRaises(TypeError, cmp, their, our)
# However, if the other class explicitly defines ordering
# relative to our class, it is allowed to do so
@ -1041,8 +1028,6 @@ class TestDate(HarmlessMixedComparison, unittest.TestCase):
self.assertEqual(their != our, True)
self.assertEqual(our < their, True)
self.assertEqual(their < our, False)
self.assertEqual(cmp(our, their), -1)
self.assertEqual(cmp(their, our), 1)
def test_bool(self):
# All dates are considered true.
@ -1440,8 +1425,6 @@ class TestDateTime(TestDate):
self.failUnless(not t1 != t2)
self.failUnless(not t1 < t2)
self.failUnless(not t1 > t2)
self.assertEqual(cmp(t1, t2), 0)
self.assertEqual(cmp(t2, t1), 0)
for i in range(len(args)):
newargs = args[:]
@ -1459,8 +1442,6 @@ class TestDateTime(TestDate):
self.failUnless(not t2 < t1)
self.failUnless(not t1 >= t2)
self.failUnless(not t2 <= t1)
self.assertEqual(cmp(t1, t2), -1)
self.assertEqual(cmp(t2, t1), 1)
# A helper for timestamp constructor tests.
@ -1728,8 +1709,6 @@ class TestTime(HarmlessMixedComparison, unittest.TestCase):
self.failUnless(not t1 != t2)
self.failUnless(not t1 < t2)
self.failUnless(not t1 > t2)
self.assertEqual(cmp(t1, t2), 0)
self.assertEqual(cmp(t2, t1), 0)
for i in range(len(args)):
newargs = args[:]
@ -1747,8 +1726,6 @@ class TestTime(HarmlessMixedComparison, unittest.TestCase):
self.failUnless(not t2 < t1)
self.failUnless(not t1 >= t2)
self.failUnless(not t2 <= t1)
self.assertEqual(cmp(t1, t2), -1)
self.assertEqual(cmp(t2, t1), 1)
for badarg in OTHERSTUFF:
self.assertEqual(t1 == badarg, False)
@ -2122,9 +2099,10 @@ class TZInfoBase:
d2 = base.replace(minute=11)
for x in d0, d1, d2:
for y in d0, d1, d2:
got = cmp(x, y)
expected = cmp(x.minute, y.minute)
self.assertEqual(got, expected)
for op in lt, le, gt, ge, eq, ne:
got = op(x, y)
expected = op(x.minute, y.minute)
self.assertEqual(got, expected)
# However, if they're different members, uctoffset is not ignored.
# Note that a time can't actually have an operand-depedent offset,
@ -2136,7 +2114,7 @@ class TZInfoBase:
d2 = base.replace(minute=11, tzinfo=OperandDependentOffset())
for x in d0, d1, d2:
for y in d0, d1, d2:
got = cmp(x, y)
got = (x > y) - (x < y)
if (x is d0 or x is d1) and (y is d0 or y is d1):
expected = 0
elif x is y is d2:

6
Lib/test/test_decimal.py
View File

@ -1012,17 +1012,11 @@ class DecimalUsabilityTest(unittest.TestCase):
self.failUnless(da != dc)
self.failUnless(da <= db)
self.failUnless(da >= db)
self.assertEqual(cmp(dc,da), 1)
self.assertEqual(cmp(da,dc), -1)
self.assertEqual(cmp(da,db), 0)
#a Decimal and an int
self.failUnless(dc > 23)
self.failUnless(23 < dc)
self.assertEqual(dc, 45)
self.assertEqual(cmp(dc,23), 1)
self.assertEqual(cmp(23,dc), -1)
self.assertEqual(cmp(dc,45), 0)
#a Decimal and uncomparable
self.assertNotEqual(da, 'ugly')

1
Lib/test/test_deque.py
View File

@ -103,7 +103,6 @@ class TestBasic(unittest.TestCase):
self.assertEqual(x <= y, list(x) <= list(y), (x,y))
self.assertEqual(x > y, list(x) > list(y), (x,y))
self.assertEqual(x >= y, list(x) >= list(y), (x,y))
self.assertEqual(cmp(x,y), cmp(list(x),list(y)), (x,y))
def test_extend(self):
d = deque('a')

40
Lib/test/test_descr.py
View File

@ -172,7 +172,6 @@ class OperatorsTest(unittest.TestCase):
def test_dicts(self):
# Testing dict operations...
## self.binop_test({1:2}, {2:1}, -1, "cmp(a,b)", "__cmp__")
self.binop_test({1:2,3:4}, 1, 1, "b in a", "__contains__")
self.binop_test({1:2,3:4}, 2, 0, "b in a", "__contains__")
self.binop_test({1:2,3:4}, 1, 2, "a[b]", "__getitem__")
@ -332,8 +331,6 @@ class OperatorsTest(unittest.TestCase):
# This is an ugly hack:
copy._deepcopy_dispatch[spam.spamdict] = spamdict
## self.binop_test(spamdict({1:2}), spamdict({2:1}), -1, "cmp(a,b)",
## "__cmp__")
self.binop_test(spamdict({1:2,3:4}), 1, 1, "b in a", "__contains__")
self.binop_test(spamdict({1:2,3:4}), 2, 0, "b in a", "__contains__")
self.binop_test(spamdict({1:2,3:4}), 1, 2, "a[b]", "__getitem__")
@ -1004,8 +1001,8 @@ order (MRO) for bases """
# Test lookup leaks [SF bug 572567]
import sys,gc
class G(object):
def __cmp__(self, other):
return 0
def __eq__(self, other):
return 1
g = G()
orig_objects = len(gc.get_objects())
for i in range(10):
@ -1525,7 +1522,6 @@ order (MRO) for bases """
self.assertNotEqual(id(c1), id(c2))
hash(c1)
hash(c2)
## self.assertEqual(cmp(c1, c2), cmp(id(c1), id(c2)))
self.assertEqual(c1, c1)
self.assert_(c1 != c2)
self.assert_(not c1 != c1)
@ -1549,7 +1545,6 @@ order (MRO) for bases """
self.assertNotEqual(id(d1), id(d2))
hash(d1)
hash(d2)
## self.assertEqual(cmp(d1, d2), cmp(id(d1), id(d2)))
self.assertEqual(d1, d1)
self.assertNotEqual(d1, d2)
self.assert_(not d1 != d1)
@ -1610,23 +1605,6 @@ order (MRO) for bases """
self.assert_(i in p10)
self.assertFalse(10 in p10)
## # Safety test for __cmp__
## def unsafecmp(a, b):
## try:
## a.__class__.__cmp__(a, b)
## except TypeError:
## pass
## else:
## self.fail("shouldn't allow %s.__cmp__(%r, %r)" % (
## a.__class__, a, b))
##
## unsafecmp("123", "123")
## unsafecmp("123", "123")
## unsafecmp(1, 1.0)
## unsafecmp(1.0, 1)
## unsafecmp(1, 1)
## unsafecmp(1, 1)
def test_weakrefs(self):
# Testing weak references...
import weakref
@ -2538,12 +2516,16 @@ order (MRO) for bases """
c = {1: c1, 2: c2, 3: c3}
for x in 1, 2, 3:
for y in 1, 2, 3:
## self.assert_(cmp(c[x], c[y]) == cmp(x, y), "x=%d, y=%d" % (x, y))
for op in "<", "<=", "==", "!=", ">", ">=":
self.assert_(eval("c[x] %s c[y]" % op) == eval("x %s y" % op),
"x=%d, y=%d" % (x, y))
## self.assert_(cmp(c[x], y) == cmp(x, y), "x=%d, y=%d" % (x, y))
## self.assert_(cmp(x, c[y]) == cmp(x, y), "x=%d, y=%d" % (x, y))
self.assert_(eval("c[x] %s c[y]" % op) ==
eval("x %s y" % op),
"x=%d, y=%d" % (x, y))
self.assert_(eval("c[x] %s y" % op) ==
eval("x %s y" % op),
"x=%d, y=%d" % (x, y))
self.assert_(eval("x %s c[y]" % op) ==
eval("x %s y" % op),
"x=%d, y=%d" % (x, y))
def test_rich_comparisons(self):
# Testing rich comparisons...

2
Lib/test/test_dict.py
View File

@ -570,7 +570,7 @@ class DictTest(unittest.TestCase):
self.fail("missing KeyError")
def test_bad_key(self):
# Dictionary lookups should fail if __cmp__() raises an exception.
# Dictionary lookups should fail if __eq__() raises an exception.
class CustomException(Exception):
pass

6
Lib/test/test_hash.py
View File

@ -55,13 +55,8 @@ class OnlyInequality(object):
def __ne__(self, other):
return self is not other
class OnlyCmp(object):
def __cmp__(self, other):
return cmp(id(self), id(other))
class InheritedHashWithEquality(FixedHash, OnlyEquality): pass
class InheritedHashWithInequality(FixedHash, OnlyInequality): pass
class InheritedHashWithCmp(FixedHash, OnlyCmp): pass
class NoHash(object):
__hash__ = None
@ -74,7 +69,6 @@ class HashInheritanceTestCase(unittest.TestCase):
fixed_expected = [FixedHash(),
InheritedHashWithEquality(),
InheritedHashWithInequality(),
InheritedHashWithCmp(),
]
error_expected = [NoHash(),
OnlyEquality(),

4
Lib/test/test_heapq.py
View File

@ -234,9 +234,9 @@ class GetOnly:
class CmpErr:
"Dummy element that always raises an error during comparison"
def __cmp__(self, other):
def __eq__(self, other):
raise ZeroDivisionError
__eq__ = __ne__ = __lt__ = __le__ = __gt__ = __ge__ = __cmp__
__ne__ = __lt__ = __le__ = __gt__ = __ge__ = __eq__
def R(seqn):
'Regular generator'

2
Lib/test/test_hmac.py
View File

@ -291,7 +291,7 @@ class CopyTestCase(unittest.TestCase):
# Testing if the copy method created a real copy.
h1 = hmac.HMAC(b"key")
h2 = h1.copy()
# Using id() in case somebody has overridden __cmp__.
# Using id() in case somebody has overridden __eq__/__ne__.
self.failUnless(id(h1) != id(h2), "No real copy of the HMAC instance.")
self.failUnless(id(h1.inner) != id(h2.inner),
"No real copy of the attribute 'inner'.")

9
Lib/test/test_kqueue.py
View File

@ -22,6 +22,7 @@ class TestKQueue(unittest.TestCase):
self.assertRaises(ValueError, kq.fileno)
def test_create_event(self):
from operator import lt, le, gt, ge
fd = sys.stderr.fileno()
ev = select.kevent(fd)
other = select.kevent(1000)
@ -33,12 +34,12 @@ class TestKQueue(unittest.TestCase):
self.assertEqual(ev.udata, 0)
self.assertEqual(ev, ev)
self.assertNotEqual(ev, other)
self.assertEqual(cmp(ev, other), -1)
self.assert_(ev < other)
self.assert_(other >= ev)
self.assertRaises(TypeError, cmp, ev, None)
self.assertRaises(TypeError, cmp, ev, 1)
self.assertRaises(TypeError, cmp, ev, "ev")
for op in lt, le, gt, ge:
self.assertRaises(TypeError, op, ev, None)
self.assertRaises(TypeError, op, ev, 1)
self.assertRaises(TypeError, op, ev, "ev")
ev = select.kevent(fd, select.KQ_FILTER_WRITE)
self.assertEqual(ev.ident, fd)

7
Lib/test/test_long.py
View File

@ -697,7 +697,8 @@ class LongTest(unittest.TestCase):
def _cmp__(self, other):
if not isinstance(other, Rat):
other = Rat(other)
return cmp(self.n * other.d, self.d * other.n)
x, y = self.n * other.d, self.d * other.n
return (x > y) - (x < y)
def __eq__(self, other):
return self._cmp__(other) == 0
def __ne__(self, other):
@ -727,8 +728,8 @@ class LongTest(unittest.TestCase):
Rx = Rat(x)
for y in cases:
Ry = Rat(y)
Rcmp = cmp(Rx, Ry)
xycmp = cmp(x, y)
Rcmp = (Rx > Ry) - (Rx < Ry)
xycmp = (x > y) - (x < y)
eq(Rcmp, xycmp, Frm("%r %r %d %d", x, y, Rcmp, xycmp))
eq(x == y, Rcmp == 0, Frm("%r == %r %d", x, y, Rcmp))
eq(x != y, Rcmp != 0, Frm("%r != %r %d", x, y, Rcmp))

10
Lib/test/test_set.py
View File

@ -1036,16 +1036,6 @@ class TestBinaryOps(unittest.TestCase):
result = self.set ^ set([8])
self.assertEqual(result, set([2, 4, 6, 8]))
def test_cmp(self):
a, b = set('a'), set('b')
self.assertRaises(TypeError, cmp, a, b)
# In py3k, this works!
self.assertRaises(TypeError, cmp, a, a)
self.assertRaises(TypeError, cmp, a, 12)
self.assertRaises(TypeError, cmp, "abc", a)
#==============================================================================
class TestUpdateOps(unittest.TestCase):

21
Lib/test/test_sort.py
View File

@ -102,7 +102,7 @@ class TestBase(unittest.TestCase):
y = x[:]
y.reverse()
s = x[:]
check("reversed via function", y, s, lambda a, b: cmp(b, a))
check("reversed via function", y, s, lambda a, b: (b>a)-(b<a))
if verbose:
print(" Checking against an insane comparison function.")
@ -157,13 +157,13 @@ class TestBugs(unittest.TestCase):
def mutating_cmp(x, y):
L.append(3)
L.pop()
return cmp(x, y)
return (x > y) - (x < y)
L = [1,2]
self.assertRaises(ValueError, L.sort, key=CmpToKey(mutating_cmp))
def mutating_cmp(x, y):
L.append(3)
del L[:]
return cmp(x, y)
return (x > y) - (x < y)
self.assertRaises(ValueError, L.sort, key=CmpToKey(mutating_cmp))
memorywaster = [memorywaster]
@ -176,7 +176,10 @@ class TestDecorateSortUndecorate(unittest.TestCase):
copy = data[:]
random.shuffle(data)
data.sort(key=str.lower)
copy.sort(key=CmpToKey(lambda x,y: cmp(x.lower(), y.lower())))
def my_cmp(x, y):
xlower, ylower = x.lower(), y.lower()
return (xlower > ylower) - (xlower < ylower)
copy.sort(key=CmpToKey(my_cmp))
def test_baddecorator(self):
data = 'The quick Brown fox Jumped over The lazy Dog'.split()
@ -246,8 +249,14 @@ class TestDecorateSortUndecorate(unittest.TestCase):
data = [(random.randrange(100), i) for i in range(200)]
copy1 = data[:]
copy2 = data[:]
data.sort(key=CmpToKey(lambda x,y: cmp(x[0],y[0])), reverse=True)
copy1.sort(key=CmpToKey(lambda x,y: cmp(y[0],x[0])))
def my_cmp(x, y):
x0, y0 = x[0], y[0]
return (x0 > y0) - (x0 < y0)
def my_cmp_reversed(x, y):
x0, y0 = x[0], y[0]
return (y0 > x0) - (y0 < x0)
data.sort(key=CmpToKey(my_cmp), reverse=True)
copy1.sort(key=CmpToKey(my_cmp_reversed))
self.assertEqual(data, copy1)
copy2.sort(key=lambda x: x[0], reverse=True)
self.assertEqual(data, copy2)

22
Lib/test/test_unittest.py
View File

@ -1103,7 +1103,7 @@ class Test_TestLoader(TestCase):
# getTestCaseNames() and all the loadTestsFromX() methods"
def test_sortTestMethodsUsing__loadTestsFromTestCase(self):
def reversed_cmp(x, y):
return -cmp(x, y)
return -((x > y) - (x < y))
class Foo(unittest.TestCase):
def test_1(self): pass
@ -1119,7 +1119,7 @@ class Test_TestLoader(TestCase):
# getTestCaseNames() and all the loadTestsFromX() methods"
def test_sortTestMethodsUsing__loadTestsFromModule(self):
def reversed_cmp(x, y):
return -cmp(x, y)
return -((x > y) - (x < y))
m = types.ModuleType('m')
class Foo(unittest.TestCase):
@ -1137,7 +1137,7 @@ class Test_TestLoader(TestCase):
# getTestCaseNames() and all the loadTestsFromX() methods"
def test_sortTestMethodsUsing__loadTestsFromName(self):
def reversed_cmp(x, y):
return -cmp(x, y)
return -((x > y) - (x < y))
m = types.ModuleType('m')
class Foo(unittest.TestCase):
@ -1155,7 +1155,7 @@ class Test_TestLoader(TestCase):
# getTestCaseNames() and all the loadTestsFromX() methods"
def test_sortTestMethodsUsing__loadTestsFromNames(self):
def reversed_cmp(x, y):
return -cmp(x, y)
return -((x > y) - (x < y))
m = types.ModuleType('m')
class Foo(unittest.TestCase):
@ -1175,7 +1175,7 @@ class Test_TestLoader(TestCase):
# Does it actually affect getTestCaseNames()?
def test_sortTestMethodsUsing__getTestCaseNames(self):
def reversed_cmp(x, y):
return -cmp(x, y)
return -((x > y) - (x < y))
class Foo(unittest.TestCase):
def test_1(self): pass
@ -1188,9 +1188,19 @@ class Test_TestLoader(TestCase):
self.assertEqual(loader.getTestCaseNames(Foo), test_names)
# "The default value is the built-in cmp() function"
# Since cmp is now defunct, we simply verify that the results
# occur in the same order as they would with the default sort.
def test_sortTestMethodsUsing__default_value(self):
loader = unittest.TestLoader()
self.failUnless(loader.sortTestMethodsUsing is cmp)
class Foo(unittest.TestCase):
def test_2(self): pass
def test_3(self): pass
def test_1(self): pass
test_names = ['test_2', 'test_3', 'test_1']
self.assertEqual(loader.getTestCaseNames(Foo), sorted(test_names))
# "it can be set to None to disable the sort."
#

2
Lib/test/test_userdict.py
View File

@ -47,7 +47,7 @@ class UserDictTest(mapping_tests.TestHashMappingProtocol):
self.assertEqual(repr(u1), repr(d1))
self.assertEqual(repr(u2), repr(d2))
# Test __cmp__ and __len__
# Test rich comparison and __len__
all = [d0, d1, d2, u, u0, u1, u2, uu, uu0, uu1, uu2]
for a in all:
for b in all:

7
Lib/test/test_uuid.py
View File

@ -181,7 +181,12 @@ class TestUUID(TestCase):
# Test comparison of UUIDs.
for i in range(len(ascending)):
for j in range(len(ascending)):
equal(cmp(i, j), cmp(ascending[i], ascending[j]))
equal(i < j, ascending[i] < ascending[j])
equal(i <= j, ascending[i] <= ascending[j])
equal(i == j, ascending[i] == ascending[j])
equal(i > j, ascending[i] > ascending[j])
equal(i >= j, ascending[i] >= ascending[j])
equal(i != j, ascending[i] != ascending[j])
# Test sorting of UUIDs (above list is in ascending order).
resorted = ascending[:]

6
Lib/unittest.py
View File

@ -539,12 +539,16 @@ def CmpToKey(mycmp):
return mycmp(self.obj, other.obj) == -1
return K
def three_way_cmp(x, y):
"""Return -1 if x < y, 0 if x == y and 1 if x > y"""
return (x > y) - (x < y)
class TestLoader(object):
"""This class is responsible for loading tests according to various
criteria and returning them wrapped in a TestSuite
"""
testMethodPrefix = 'test'
sortTestMethodsUsing = cmp
sortTestMethodsUsing = staticmethod(three_way_cmp)
suiteClass = TestSuite
def loadTestsFromTestCase(self, testCaseClass):

22
Lib/xml/dom/minidom.py
View File

@ -520,11 +520,29 @@ class NamedNodeMap(object):
__len__ = _get_length
def __cmp__(self, other):
def _cmp(self, other):
if self._attrs is getattr(other, "_attrs", None):
return 0
else:
return cmp(id(self), id(other))
return (id(self) > id(other)) - (id(self) < id(other))
def __eq__(self, other):
return self._cmp(other) == 0
def __ge__(self, other):
return self._cmp(other) >= 0
def __gt__(self, other):
return self._cmp(other) > 0
def __le__(self, other):
return self._cmp(other) <= 0
def __lt__(self, other):
return self._cmp(other) < 0
def __ne__(self, other):
return self._cmp(other) != 0
def __getitem__(self, attname_or_tuple):
if isinstance(attname_or_tuple, tuple):

26
Lib/xml/etree/ElementTree.py
View File

@ -498,10 +498,30 @@ class QName:
return self.text
def __hash__(self):
return hash(self.text)
def __cmp__(self, other):
def __le__(self, other):
if isinstance(other, QName):
return cmp(self.text, other.text)
return cmp(self.text, other)
return self.text <= other.text
return self.text <= other
def __lt__(self, other):
if isinstance(other, QName):
return self.text < other.text
return self.text < other
def __ge__(self, other):
if isinstance(other, QName):
return self.text >= other.text
return self.text >= other
def __gt__(self, other):
if isinstance(other, QName):
return self.text > other.text
return self.text > other
def __eq__(self, other):
if isinstance(other, QName):
return self.text == other.text
return self.text == other
def __ne__(self, other):
if isinstance(other, QName):
return self.text != other.text
return self.text != other
##
# ElementTree wrapper class. This class represents an entire element

4
Lib/xmlrpc/client.py
View File

@ -349,10 +349,6 @@ class DateTime:
def timetuple(self):
return time.strptime(self.value, "%Y%m%dT%H:%M:%S")
def __cmp__(self, other):
s, o = self.make_comparable(other)
return cmp(s, o)
##
# Get date/time value.
#

19
Tools/unicode/makeunicodedata.py
View File

@ -457,15 +457,6 @@ def makeunicodetype(unicode, trace):
# --------------------------------------------------------------------
# unicode name database
def CmpToKey(mycmp):
'Convert a cmp= function into a key= function'
class K(object):
def __init__(self, obj, *args):
self.obj = obj
def __lt__(self, other):
return mycmp(self.obj, other.obj) == -1
return K
def makeunicodename(unicode, trace):
FILE = "Modules/unicodename_db.h"
@ -508,14 +499,10 @@ def makeunicodename(unicode, trace):
wordlist = list(words.items())
# sort on falling frequency, then by name
def cmpwords(a,b):
def word_key(a):
aword, alist = a
bword, blist = b
r = -cmp(len(alist),len(blist))
if r:
return r
return cmp(aword, bword)
wordlist.sort(key=CmpToKey(cmpwords))
return -len(alist), aword
wordlist.sort(key=word_key)
# figure out how many phrasebook escapes we need
escapes = 0