AppPkg/Applications/Python/Python-2.7.2/Lib/lib2to3/fixes/fix_input.py

   1 """Fixer that changes input(...) into eval(input(...))."""
   2 # Author: Andre Roberge
   3
   4 # Local imports
   5 from .. import fixer_base
   6 from ..fixer_util import Call, Name
   7 from .. import patcomp
   8
   9
  10 context = patcomp.compile_pattern("power< 'eval' trailer< '(' any ')' > >")
  11
  12
  13 class FixInput(fixer_base.BaseFix):
  14     BM_compatible = True
  15     PATTERN = """
  16               power< 'input' args=trailer< '(' [any] ')' > >
  17               """
  18
  19     def transform(self, node, results):
  20         # If we're already wrapped in a eval() call, we're done.
  21         if context.match(node.parent.parent):
  22             return
  23
  24         new = node.clone()
  25         new.prefix = u""
  26         return Call(Name(u"eval"), [new], prefix=node.prefix)