""" | |
Fixer that changes zip(seq0, seq1, ...) into list(zip(seq0, seq1, ...) | |
unless there exists a 'from future_builtins import zip' statement in the | |
top-level namespace. | |
We avoid the transformation if the zip() call is directly contained in | |
iter(<>), list(<>), tuple(<>), sorted(<>), ...join(<>), or for V in <>:. | |
""" | |
# Local imports | |
from .. import fixer_base | |
from ..fixer_util import Name, Call, in_special_context | |
class FixZip(fixer_base.ConditionalFix): | |
BM_compatible = True | |
PATTERN = """ | |
power< 'zip' args=trailer< '(' [any] ')' > | |
> | |
""" | |
skip_on = "future_builtins.zip" | |
def transform(self, node, results): | |
if self.should_skip(node): | |
return | |
if in_special_context(node): | |
return None | |
new = node.clone() | |
new.prefix = u"" | |
new = Call(Name(u"list"), [new]) | |
new.prefix = node.prefix | |
return new |