bpo-40679: Use the function's qualname in certain TypeErrors (GH-20236)

Patch by Dennis Sweeney.

1 files changed, 16 insertions, 15 deletions

diff --git a/Python/ceval.c b/Python/ceval.c
index 43ea1c7..a79773f 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -3875,7 +3875,7 @@ exit_eval_frame:
 
 static void
 format_missing(PyThreadState *tstate, const char *kind,
-               PyCodeObject *co, PyObject *names)
+               PyCodeObject *co, PyObject *names, PyObject *qualname)
 {
     int err;
     Py_ssize_t len = PyList_GET_SIZE(names);
@@ -3928,7 +3928,7 @@ format_missing(PyThreadState *tstate, const char *kind,
         return;
     _PyErr_Format(tstate, PyExc_TypeError,
                   "%U() missing %i required %s argument%s: %U",
-                  co->co_name,
+                  qualname,
                   len,
                   kind,
                   len == 1 ? "" : "s",
@@ -3939,7 +3939,7 @@ format_missing(PyThreadState *tstate, const char *kind,
 static void
 missing_arguments(PyThreadState *tstate, PyCodeObject *co,
                   Py_ssize_t missing, Py_ssize_t defcount,
-                  PyObject **fastlocals)
+                  PyObject **fastlocals, PyObject *qualname)
 {
     Py_ssize_t i, j = 0;
     Py_ssize_t start, end;
@@ -3971,14 +3971,14 @@ missing_arguments(PyThreadState *tstate, PyCodeObject *co,
         }
     }
     assert(j == missing);
-    format_missing(tstate, kind, co, missing_names);
+    format_missing(tstate, kind, co, missing_names, qualname);
     Py_DECREF(missing_names);
 }
 
 static void
 too_many_positional(PyThreadState *tstate, PyCodeObject *co,
                     Py_ssize_t given, Py_ssize_t defcount,
-                    PyObject **fastlocals)
+                    PyObject **fastlocals, PyObject *qualname)
 {
     int plural;
     Py_ssize_t kwonly_given = 0;
@@ -4022,7 +4022,7 @@ too_many_positional(PyThreadState *tstate, PyCodeObject *co,
     }
     _PyErr_Format(tstate, PyExc_TypeError,
                   "%U() takes %U positional argument%s but %zd%U %s given",
-                  co->co_name,
+                  qualname,
                   sig,
                   plural ? "s" : "",
                   given,
@@ -4034,7 +4034,8 @@ too_many_positional(PyThreadState *tstate, PyCodeObject *co,
 
 static int
 positional_only_passed_as_keyword(PyThreadState *tstate, PyCodeObject *co,
-                                  Py_ssize_t kwcount, PyObject* const* kwnames)
+                                  Py_ssize_t kwcount, PyObject* const* kwnames,
+                                  PyObject *qualname)
 {
     int posonly_conflicts = 0;
     PyObject* posonly_names = PyList_New(0);
@@ -4079,7 +4080,7 @@ positional_only_passed_as_keyword(PyThreadState *tstate, PyCodeObject *co,
         _PyErr_Format(tstate, PyExc_TypeError,
                       "%U() got some positional-only arguments passed"
                       " as keyword arguments: '%U'",
-                      co->co_name, error_names);
+                      qualname, error_names);
         Py_DECREF(error_names);
         goto fail;
     }
@@ -4180,7 +4181,7 @@ _PyEval_EvalCode(PyThreadState *tstate,
         if (keyword == NULL || !PyUnicode_Check(keyword)) {
             _PyErr_Format(tstate, PyExc_TypeError,
                           "%U() keywords must be strings",
-                          co->co_name);
+                          qualname);
             goto fail;
         }
 
@@ -4211,14 +4212,14 @@ _PyEval_EvalCode(PyThreadState *tstate,
 
             if (co->co_posonlyargcount
                 && positional_only_passed_as_keyword(tstate, co,
-                                                     kwcount, kwnames))
+                                                     kwcount, kwnames, qualname))
             {
                 goto fail;
             }
 
             _PyErr_Format(tstate, PyExc_TypeError,
                           "%U() got an unexpected keyword argument '%S'",
-                          co->co_name, keyword);
+                          qualname, keyword);
             goto fail;
         }
 
@@ -4231,7 +4232,7 @@ _PyEval_EvalCode(PyThreadState *tstate,
         if (GETLOCAL(j) != NULL) {
             _PyErr_Format(tstate, PyExc_TypeError,
                           "%U() got multiple values for argument '%S'",
-                          co->co_name, keyword);
+                          qualname, keyword);
             goto fail;
         }
         Py_INCREF(value);
@@ -4240,7 +4241,7 @@ _PyEval_EvalCode(PyThreadState *tstate,
 
     /* Check the number of positional arguments */
     if ((argcount > co->co_argcount) && !(co->co_flags & CO_VARARGS)) {
-        too_many_positional(tstate, co, argcount, defcount, fastlocals);
+        too_many_positional(tstate, co, argcount, defcount, fastlocals, qualname);
         goto fail;
     }
 
@@ -4254,7 +4255,7 @@ _PyEval_EvalCode(PyThreadState *tstate,
             }
         }
         if (missing) {
-            missing_arguments(tstate, co, missing, defcount, fastlocals);
+            missing_arguments(tstate, co, missing, defcount, fastlocals, qualname);
             goto fail;
         }
         if (n > m)
@@ -4292,7 +4293,7 @@ _PyEval_EvalCode(PyThreadState *tstate,
             missing++;
         }
         if (missing) {
-            missing_arguments(tstate, co, missing, -1, fastlocals);
+            missing_arguments(tstate, co, missing, -1, fastlocals, qualname);
             goto fail;
         }
     }