dict-init-mutate / C3401ΒΆ

Message emitted:

Declare all known key/values when initializing the dictionary.


Dictionaries can be initialized with a single statement using dictionary literal syntax.

Problematic code:

fruit_prices = {}  # [dict-init-mutate]
fruit_prices["apple"] = 1
fruit_prices["banana"] = 10

Correct code:

fruit_prices = {"apple": 1, "banana": 10}

Configuration file:



This message is emitted by the optional 'dict-init-mutate' checker, which requires the pylint.extensions.dict_init_mutate plugin to be loaded.

Created by the dict-init-mutate checker.