merge 2to3 improvments

Lib/lib2to3/fixes/fix_operator.py

@@ -0,0 +1,40 @@
+"""Fixer for operator.{isCallable,sequenceIncludes}
+
+operator.isCallable(obj) -> hasattr(obj, '__call__')
+operator.sequenceIncludes(obj) -> operator.contains(obj)
+"""
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Call, Name, String
+
+class FixOperator(fixer_base.BaseFix):
+
+    methods = "method=('isCallable'|'sequenceIncludes')"
+    func = "'(' func=any ')'"
+    PATTERN = """
+              power< module='operator'
+                trailer< '.' {methods} > trailer< {func} > >
+              |
+              power< {methods} trailer< {func} > >
+              """.format(methods=methods, func=func)
+
+    def transform(self, node, results):
+        method = results["method"][0]
+
+        if method.value == "sequenceIncludes":
+            if "module" not in results:
+                # operator may not be in scope, so we can't make a change.
+                self.warning(node, "You should use operator.contains here.")
+            else:
+                method.value = "contains"
+                method.changed()
+        elif method.value == "isCallable":
+            if "module" not in results:
+                self.warning(node,
+                             "You should use hasattr(%s, '__call__') here." %
+                             results["func"].value)
+            else:
+                func = results["func"]
+                args = [func.clone(), String(", "), String("'__call__'")]
+                return Call(Name("hasattr"), args, prefix=node.prefix)