format-combined-specification / W1305

Message emitted:

Format string contains both automatic field numbering and manual field specification

Description:

Used when a PEP 3101 format string contains both automatic field numbering (e.g. '{}') and manual field specification (e.g. '{0}').

Problematic code:

print("{} {1}".format("hello", "world"))  # [format-combined-specification]

Correct code:

index_formatting.py:

print("{0} {1}".format("hello", "world"))

order_formatting.py:

print("{} {}".format("hello", "world"))

Created by the string checker.