bad-format-string / W1302#
Message emitted:
Invalid format string
Description:
Used when a PEP 3101 format string is invalid.
Problematic code:
print('{a[0] + a[1]}'.format(a=[0, 1])) # [bad-format-string]
Correct code:
print('{a[0]} + {a[1]}'.format(a=[0, 1]))
Related links:
Created by the string checker.