lib-python.2.7.lib2to3.fixes.fix_zip.py Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jython-installer Show documentation

Jython is an implementation of the high-level, dynamic, object-oriented language Python written in 100% Pure Java, and seamlessly integrated with the Java platform. It thus allows you to run Python on any Java platform.

There is a newer version: 2.7.4

Show newest version

"""
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