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-rw-r--r--Lib/inspect.py2
-rw-r--r--Lib/test/test_inspect.py6
-rw-r--r--Misc/NEWS3
3 files changed, 10 insertions, 1 deletions
diff --git a/Lib/inspect.py b/Lib/inspect.py
index fdb5e2a45a..bb3109883a 100644
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -1127,7 +1127,7 @@ def _missing_arguments(f_name, argnames, pos, values):
elif missing == 2:
s = "{} and {}".format(*names)
else:
- tail = ", {} and {}".format(names[-2:])
+ tail = ", {} and {}".format(*names[-2:])
del names[-2:]
s = ", ".join(names) + tail
raise TypeError("%s() missing %i required %s argument%s: %s" %
diff --git a/Lib/test/test_inspect.py b/Lib/test/test_inspect.py
index b94353031b..881ca95a70 100644
--- a/Lib/test/test_inspect.py
+++ b/Lib/test/test_inspect.py
@@ -1216,6 +1216,12 @@ class TestGetcallargsFunctions(unittest.TestCase):
inspect.getcallargs(f5)
+ # issue20817:
+ def f6(a, b, c):
+ pass
+ with self.assertRaisesRegex(TypeError, "'a', 'b' and 'c'"):
+ inspect.getcallargs(f6)
+
class TestGetcallargsMethods(TestGetcallargsFunctions):
def setUp(self):
diff --git a/Misc/NEWS b/Misc/NEWS
index fa774ba50d..3d62992d30 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -116,6 +116,9 @@ Library
- Issue #20816: Fix inspect.getcallargs() to raise correct TypeError for
missing keyword-only arguments. Patch by Jeremiah Lowin.
+- Issue #20817: Fix inspect.getcallargs() to fail correctly if more
+ than 3 arguments are missing. Patch by Jeremiah Lowin.
+
Documentation
-------------