mirror of
https://github.com/python/cpython.git
synced 2025-10-31 05:31:20 +00:00
766f5d9d73
svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3 ........ r81478 | benjamin.peterson | 2010-05-22 13:47:39 -0500 (Sat, 22 May 2010) | 1 line ensure doctests have some future_features ........ r82530 | benjamin.peterson | 2010-07-04 11:11:41 -0500 (Sun, 04 Jul 2010) | 1 line simplify ignore star imports from itertools #8892 ........ r82531 | benjamin.peterson | 2010-07-04 11:13:20 -0500 (Sun, 04 Jul 2010) | 1 line wrap with parenthesis not \ ........
55 lines
1.9 KiB
Python
55 lines
1.9 KiB
Python
""" Fixer for imports of itertools.(imap|ifilter|izip|ifilterfalse) """
|
|
|
|
# Local imports
|
|
from lib2to3 import fixer_base
|
|
from lib2to3.fixer_util import BlankLine, syms, token
|
|
|
|
|
|
class FixItertoolsImports(fixer_base.BaseFix):
|
|
PATTERN = """
|
|
import_from< 'from' 'itertools' 'import' imports=any >
|
|
""" %(locals())
|
|
|
|
def transform(self, node, results):
|
|
imports = results['imports']
|
|
if imports.type == syms.import_as_name or not imports.children:
|
|
children = [imports]
|
|
else:
|
|
children = imports.children
|
|
for child in children[::2]:
|
|
if child.type == token.NAME:
|
|
member = child.value
|
|
name_node = child
|
|
elif child.type == token.STAR:
|
|
# Just leave the import as is.
|
|
return
|
|
else:
|
|
assert child.type == syms.import_as_name
|
|
name_node = child.children[0]
|
|
member_name = name_node.value
|
|
if member_name in ('imap', 'izip', 'ifilter'):
|
|
child.value = None
|
|
child.remove()
|
|
elif member_name == 'ifilterfalse':
|
|
node.changed()
|
|
name_node.value = 'filterfalse'
|
|
|
|
# Make sure the import statement is still sane
|
|
children = imports.children[:] or [imports]
|
|
remove_comma = True
|
|
for child in children:
|
|
if remove_comma and child.type == token.COMMA:
|
|
child.remove()
|
|
else:
|
|
remove_comma ^= True
|
|
|
|
if children[-1].type == token.COMMA:
|
|
children[-1].remove()
|
|
|
|
# If there are no imports left, just get rid of the entire statement
|
|
if (not (imports.children or getattr(imports, 'value', None)) or
|
|
imports.parent is None):
|
|
p = node.prefix
|
|
node = BlankLine()
|
|
node.prefix = p
|
|
return node
|