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-rw-r--r--Lib/_strptime.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/_strptime.py b/Lib/_strptime.py
index 3ecfc2a..7520919 100644
--- a/Lib/_strptime.py
+++ b/Lib/_strptime.py
@@ -326,7 +326,7 @@ def _strptime(data_string, format="%a %b %d %H:%M:%S %Y"):
bad_directive = "%"
del err
raise ValueError("'%s' is a bad directive in format '%s'" %
- (bad_directive, format))
+ (bad_directive, format)) from None
# IndexError only occurs when the format string is "%"
except IndexError:
raise ValueError("stray %% in format '%s'" % format)