diff -r 20bd4c23cfe4 Lib/inspect.py
--- a/Lib/inspect.py	Tue May 31 20:17:58 2016 -0400
+++ b/Lib/inspect.py	Tue May 31 20:39:57 2016 -0700
@@ -2711,10 +2711,11 @@
         return _signature_from_builtin(cls, func)
 
     @classmethod
-    def from_callable(cls, obj, *, follow_wrapped=True):
+    def from_callable(cls, obj, *, follow_wrapped=True, skip_bound_arg=True):
         """Constructs Signature for the given callable object."""
         return _signature_from_callable(obj, sigcls=cls,
-                                        follow_wrapper_chains=follow_wrapped)
+                                        follow_wrapper_chains=follow_wrapped,
+                                        skip_bound_arg=skip_bound_arg)
 
     @property
     def parameters(self):