updated error message

story645 · story645 · commit 26b95835baee · 2020-05-01T14:45:56.000-04:00
diff --git a/lib/matplotlib/tests/test_ticker.py b/lib/matplotlib/tests/test_ticker.py
@@ -1060,7 +1060,7 @@ def test_arguments(self, func, args, expected):
                                       ("{}+{}+{}".format)],
                                 ids=["function", "format"])
     def test_typerror(self, func):
-        with pytest.raises(TypeError, match=r'function: 3'):
+        with pytest.raises(TypeError, match=r'3 arguments'):
             mticker.FuncFormatter(func)
 
     def test_other_builtins(self):
diff --git a/lib/matplotlib/ticker.py b/lib/matplotlib/ticker.py
@@ -404,7 +404,7 @@ def __init__(self, func):
         elif nargs == 2:
             self.func = func
         else:
-            raise TypeError(f"Number of parameters in function: {nargs}. "
+            raise TypeError(f"{func.__name__} takes {nargs} arguments. "
                              "FuncFormatter functions take at most 2: "
                              "x (required), pos (optional).")
 
