bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-13700)

1 files changed, 5 insertions, 7 deletions

diff --git a/Lib/inspect.py b/Lib/inspect.py
index a4f28f7..ca81a24 100644
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -1329,14 +1329,12 @@ def _too_many(f_name, args, kwonly, varargs, defcount, given, values):
             (f_name, sig, "s" if plural else "", given, kwonly_sig,
              "was" if given == 1 and not kwonly_given else "were"))
 
-def getcallargs(*func_and_positional, **named):
+def getcallargs(func, /, *positional, **named):
     """Get the mapping of arguments to values.
 
     A dict is returned, with keys the function argument names (including the
     names of the * and ** arguments, if any), and values the respective bound
     values from 'positional' and 'named'."""
-    func = func_and_positional[0]
-    positional = func_and_positional[1:]
     spec = getfullargspec(func)
     args, varargs, varkw, defaults, kwonlyargs, kwonlydefaults, ann = spec
     f_name = func.__name__
@@ -3027,19 +3025,19 @@ class Signature:
 
         return self._bound_arguments_cls(self, arguments)
 
-    def bind(*args, **kwargs):
+    def bind(self, /, *args, **kwargs):
         """Get a BoundArguments object, that maps the passed `args`
         and `kwargs` to the function's signature.  Raises `TypeError`
         if the passed arguments can not be bound.
         """
-        return args[0]._bind(args[1:], kwargs)
+        return self._bind(args, kwargs)
 
-    def bind_partial(*args, **kwargs):
+    def bind_partial(self, /, *args, **kwargs):
         """Get a BoundArguments object, that partially maps the
         passed `args` and `kwargs` to the function's signature.
         Raises `TypeError` if the passed arguments can not be bound.
         """
-        return args[0]._bind(args[1:], kwargs, partial=True)
+        return self._bind(args, kwargs, partial=True)
 
     def __reduce__(self):
         return (type(self),