mirror of
https://github.com/python/cpython.git
synced 2025-11-03 07:01:21 +00:00
46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
"""
|
|
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 ..pytree import Node
|
|
from ..pygram import python_symbols as syms
|
|
from ..fixer_util import Name, ArgList, in_special_context
|
|
|
|
|
|
class FixZip(fixer_base.ConditionalFix):
|
|
|
|
BM_compatible = True
|
|
PATTERN = """
|
|
power< 'zip' args=trailer< '(' [any] ')' > [trailers=trailer*]
|
|
>
|
|
"""
|
|
|
|
skip_on = "future_builtins.zip"
|
|
|
|
def transform(self, node, results):
|
|
if self.should_skip(node):
|
|
return
|
|
|
|
if in_special_context(node):
|
|
return None
|
|
|
|
args = results['args'].clone()
|
|
args.prefix = ""
|
|
|
|
trailers = []
|
|
if 'trailers' in results:
|
|
trailers = [n.clone() for n in results['trailers']]
|
|
for n in trailers:
|
|
n.prefix = ""
|
|
|
|
new = Node(syms.power, [Name("zip"), args], prefix="")
|
|
new = Node(syms.power, [Name("list"), ArgList([new])] + trailers)
|
|
new.prefix = node.prefix
|
|
return new
|