git checkout v3.7.x
git pull

git cherry-pick -x -m1 544d8cef2a00f243228f09c1f0dea3ee0e8409c1

git commit -am 'Backport PR #25863: Fix incorrect usage of nargs_error.'

git push YOURFORK v3.7.x:auto-backport-of-pr-25863-on-v3.7.x

@@@ -314,7 -321,7 +314,11 @@@ class Axes(_AxesBase)
                  *args,
                  **kwargs)
          if len(extra_args):
++<<<<<<< HEAD
 +            raise TypeError('legend only accepts two non-keyword arguments')
++=======
+             raise _api.nargs_error('legend', '0-2', len(args))
++>>>>>>> 544d8cef2a (Merge pull request #25863 from anntzer/ne)
          self.legend_ = mlegend.Legend(self, handles, labels, **kwargs)
          self.legend_._remove_method = self._remove_legend
          return self.legend_
@@@ -2978,8 -3005,7 +2982,12 @@@
              which inspired this method.
          """
          if not 1 <= len(args) <= 3:
++<<<<<<< HEAD
 +            raise TypeError('stem expected between 1 or 3 positional '
 +                            'arguments, got {}'.format(args))
++=======
+             raise _api.nargs_error('stem', '1-3', len(args))
++>>>>>>> 544d8cef2a (Merge pull request #25863 from anntzer/ne)
          _api.check_in_list(['horizontal', 'vertical'], orientation=orientation)
  
          if len(args) == 1:
@@@ -6396,7 -6422,7 +6404,11 @@@ default: :rc:`scatter.edgecolors
              else:
                  raise TypeError("arguments do not match valid signatures")
          else:
++<<<<<<< HEAD
 +            raise TypeError("need 1 argument or 3 arguments")
++=======
+             raise _api.nargs_error('pcolorfast', '1 or 3', len(args))
++>>>>>>> 544d8cef2a (Merge pull request #25863 from anntzer/ne)
  
          if style == "quadmesh":
              # data point in each cell is value at lower left corner