1 """ 2 Fixer that changes zip(seq0, seq1, ...) into list(zip(seq0, seq1, ...) 3 unless there exists a 'from future_builtins import zip' statement in the 4 top-level namespace. 5 6 We avoid the transformation if the zip() call is directly contained in 7 iter(<>), list(<>), tuple(<>), sorted(<>), ...join(<>), or for V in <>:. 8 """ 9 10 # Local imports 11 from .. import fixer_base 12 from ..fixer_util import Name, Call, in_special_context 13 14 class FixZip(fixer_base.ConditionalFix): 15 16 BM_compatible = True 17 PATTERN = """ 18 power< 'zip' args=trailer< '(' [any] ')' > 19 > 20 """ 21 22 skip_on = "future_builtins.zip" 23 24 def transform(self, node, results): 25 if self.should_skip(node): 26 return 27 28 if in_special_context(node): 29 return None 30 31 new = node.clone() 32 new.prefix = u"" 33 new = Call(Name(u"list"), [new]) 34 new.prefix = node.prefix 35 return new 36
