Merged revisions 77848 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r77848 | martin.v.loewis | 2010-01-30 12:05:48 +0100 (Sa, 30 Jan 2010) | 20 lines

  Merged revisions 77846 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

  ................
    r77846 | martin.v.loewis | 2010-01-30 11:56:23 +0100 (Sa, 30 Jan 2010) | 13 lines

    Merged revisions 77419,77435 via svnmerge from
    svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

    ........
      r77419 | benjamin.peterson | 2010-01-10 21:39:48 +0100 (So, 10 Jan 2010) | 1 line

      enclose path in quotes to handle paths with spaces correctly #7666
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      r77435 | alexandre.vassalotti | 2010-01-12 01:36:54 +0100 (Di, 12 Jan 2010) | 2 lines

      Issue #1967: Add fixer for dictionary views.
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This commit is contained in:
Martin v. Löwis 2010-01-30 11:22:26 +00:00
parent 34343df543
commit 5577eaa1e3
3 changed files with 68 additions and 4 deletions

View File

@ -11,6 +11,10 @@ d.iterkeys() -> iter(d.keys())
d.iteritems() -> iter(d.items())
d.itervalues() -> iter(d.values())
d.viewkeys() -> d.keys()
d.viewitems() -> d.items()
d.viewvalues() -> d.values()
Except in certain very specific contexts: the iter() can be dropped
when the context is list(), sorted(), iter() or for...in; the list()
can be dropped when the context is list() or sorted() (but not iter()
@ -39,7 +43,8 @@ class FixDict(fixer_base.BaseFix):
PATTERN = """
power< head=any+
trailer< '.' method=('keys'|'items'|'values'|
'iterkeys'|'iteritems'|'itervalues') >
'iterkeys'|'iteritems'|'itervalues'|
'viewkeys'|'viewitems'|'viewvalues') >
parens=trailer< '(' ')' >
tail=any*
>
@ -52,7 +57,8 @@ class FixDict(fixer_base.BaseFix):
syms = self.syms
method_name = method.value
isiter = method_name.startswith("iter")
if isiter:
isview = method_name.startswith("view")
if isiter or isview:
method_name = method_name[4:]
assert method_name in ("keys", "items", "values"), repr(method)
head = [n.clone() for n in head]
@ -64,7 +70,7 @@ class FixDict(fixer_base.BaseFix):
prefix=method.prefix)]),
results["parens"].clone()]
new = pytree.Node(syms.power, args)
if not special:
if not (special or isview):
new.prefix = ""
new = Call(Name("iter" if isiter else "list"), [new])
if tail:

View File

@ -1215,6 +1215,14 @@ class Test_dict(FixerTestCase):
a = "[i for i in d. keys( ) ]"
self.check(b, a)
b = "if d. viewkeys ( ) : pass"
a = "if d. keys ( ) : pass"
self.check(b, a)
b = "[i for i in d. viewkeys( ) ]"
a = "[i for i in d. keys( ) ]"
self.check(b, a)
def test_trailing_comment(self):
b = "d.keys() # foo"
a = "list(d.keys()) # foo"
@ -1234,6 +1242,16 @@ class Test_dict(FixerTestCase):
]"""
self.check(b, a)
b = """[i for i in d.iterkeys() # foo
]"""
a = """[i for i in d.keys() # foo
]"""
self.check(b, a)
b = "d.viewitems() # foo"
a = "d.items() # foo"
self.check(b, a)
def test_unchanged(self):
for wrapper in fixer_util.consuming_calls:
s = "s = %s(d.keys())" % wrapper
@ -1367,6 +1385,46 @@ class Test_dict(FixerTestCase):
a = "for x in list(h.keys())[0]: print x"
self.check(b, a)
def test_25(self):
b = "d.viewkeys()"
a = "d.keys()"
self.check(b, a)
def test_26(self):
b = "d.viewitems()"
a = "d.items()"
self.check(b, a)
def test_27(self):
b = "d.viewvalues()"
a = "d.values()"
self.check(b, a)
def test_14(self):
b = "[i for i in d.viewkeys()]"
a = "[i for i in d.keys()]"
self.check(b, a)
def test_15(self):
b = "(i for i in d.viewkeys())"
a = "(i for i in d.keys())"
self.check(b, a)
def test_17(self):
b = "iter(d.viewkeys())"
a = "iter(d.keys())"
self.check(b, a)
def test_18(self):
b = "list(d.viewkeys())"
a = "list(d.keys())"
self.check(b, a)
def test_19(self):
b = "sorted(d.viewkeys())"
a = "sorted(d.keys())"
self.check(b, a)
class Test_xrange(FixerTestCase):
fixer = "xrange"

View File

@ -206,6 +206,6 @@ def diff(fn, result):
finally:
f.close()
try:
return os.system("diff -u %s @" % fn)
return os.system("diff -u %r @" % fn)
finally:
os.remove("@")