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✏️ /dict_init_mutate.py

# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# For details: https://github.com/PyCQA/pylint/blob/main/LICENSE
# Copyright (c) https://github.com/PyCQA/pylint/blob/main/CONTRIBUTORS.txt

"""Check for use of dictionary mutation after initialization."""
from __future__ import annotations

from typing import TYPE_CHECKING

from astroid import nodes

from pylint.checkers import BaseChecker
from pylint.checkers.utils import only_required_for_messages
from pylint.interfaces import HIGH

if TYPE_CHECKING:
    from pylint.lint.pylinter import PyLinter

class DictInitMutateChecker(BaseChecker):
    name = "dict-init-mutate"
    msgs = {
        "C3401": (
            "Declare all known key/values when initializing the dictionary.",
            "dict-init-mutate",
            "Dictionaries can be initialized with a single statement "
            "using dictionary literal syntax.",
        )
    }

@only_required_for_messages("dict-init-mutate")
    def visit_assign(self, node: nodes.Assign) -> None:
        """
        Detect dictionary mutation immediately after initialization.

At this time, detecting nested mutation is not supported.
        """
        if not isinstance(node.value, nodes.Dict):
            return

dict_name = node.targets[0]
        if len(node.targets) != 1 or not isinstance(dict_name, nodes.AssignName):
            return

first_sibling = node.next_sibling()
        if (
            not first_sibling
            or not isinstance(first_sibling, nodes.Assign)
            or len(first_sibling.targets) != 1
        ):
            return

sibling_target = first_sibling.targets[0]
        if not isinstance(sibling_target, nodes.Subscript):
            return

sibling_name = sibling_target.value
        if not isinstance(sibling_name, nodes.Name):
            return

if sibling_name.name == dict_name.name:
            self.add_message("dict-init-mutate", node=node, confidence=HIGH)

def register(linter: PyLinter) -> None:
    linter.register_checker(DictInitMutateChecker(linter))

Batal

⬅ pylint 30 item

Nama	Tipe	Ukuran	Diubah	Aksi
📁__pycache__	dir	—	2026-03-11 18:53	📂 Buka
🐍__init__.py	py	575 B	2026-01-20 12:58	✏️ 👁️
🐍_check_docs_utils.py	py	25.7 KB	2026-01-20 12:58	✏️ 👁️
🐍bad_builtin.py	py	2.2 KB	2026-01-20 12:58	✏️ 👁️
🐍broad_try_clause.py	py	2.2 KB	2026-01-20 12:58	✏️ 👁️
🐍check_elif.py	py	2.1 KB	2026-01-20 12:58	✏️ 👁️
🐍code_style.py	py	12.5 KB	2026-01-20 12:58	✏️ 👁️
🐍comparetozero.py	py	3.1 KB	2026-01-20 12:58	✏️ 👁️
🐍comparison_placement.py	py	2.3 KB	2026-01-20 12:58	✏️ 👁️
🐍confusing_elif.py	py	2 KB	2026-01-20 12:58	✏️ 👁️
🐍consider_refactoring_into_while_condition.py	py	3.2 KB	2026-01-20 12:58	✏️ 👁️
🐍consider_ternary_expression.py	py	1.7 KB	2026-01-20 12:58	✏️ 👁️
🐍dict_init_mutate.py	py	2.1 KB	2026-01-20 12:58	✏️ 👁️
🐍docparams.py	py	25.3 KB	2026-01-20 12:58	✏️ 👁️
🐍docstyle.py	py	2.9 KB	2026-01-20 12:58	✏️ 👁️
🐍dunder.py	py	2.3 KB	2026-01-20 12:58	✏️ 👁️
🐍empty_comment.py	py	1.9 KB	2026-01-20 12:58	✏️ 👁️
🐍emptystring.py	py	2.9 KB	2026-01-20 12:58	✏️ 👁️
🐍eq_without_hash.py	py	1.4 KB	2026-01-20 12:58	✏️ 👁️
🐍for_any_all.py	py	5.7 KB	2026-01-20 12:58	✏️ 👁️
🐍magic_value.py	py	4.1 KB	2026-01-20 12:58	✏️ 👁️
🐍mccabe.py	py	6.9 KB	2026-01-20 12:58	✏️ 👁️
🐍no_self_use.py	py	3.6 KB	2026-01-20 12:58	✏️ 👁️
🐍overlapping_exceptions.py	py	3.3 KB	2026-01-20 12:58	✏️ 👁️
🐍private_import.py	py	11 KB	2026-01-20 12:58	✏️ 👁️
🐍redefined_loop_name.py	py	3.1 KB	2026-01-20 12:58	✏️ 👁️
🐍redefined_variable_type.py	py	4 KB	2026-01-20 12:58	✏️ 👁️
🐍set_membership.py	py	1.8 KB	2026-01-20 12:58	✏️ 👁️
🐍typing.py	py	19.9 KB	2026-01-20 12:58	✏️ 👁️
🐍while_used.py	py	1.1 KB	2026-01-20 12:58	✏️ 👁️

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