+
−"""
+
−Fixer for input.
+
−
+
−Does a check for `from builtins import input` before running the lib2to3 fixer.
+
−The fixer will not run when the input is already present.
+
−
+
−
+
−this:
+
−    a = input()
+
−becomes:
+
−    from builtins import input
+
−    a = eval(input())
+
−
+
−and this:
+
−    from builtins import input
+
−    a = input()
+
−becomes (no change):
+
−    from builtins import input
+
−    a = input()
+
−"""
+
−
+
−import lib2to3.fixes.fix_input
+
−from lib2to3.fixer_util import does_tree_import
+
−
+
−
+
−class FixInput(lib2to3.fixes.fix_input.FixInput):
+
−    def transform(self, node, results):
+
−
+
−        if does_tree_import('builtins', 'input', node):
+
−            return
+
−
+
−        return super(FixInput, self).transform(node, results)