use-collections-abc

Collection: fixit-extra Autofix: Yes Python: `>= 3.3`

Checks for the use of the deprecated collections ABC import. Since python 3.3, the Collections Abstract Base Classes (ABC) have been moved to collections.abc. These ABCs are import errors starting in Python 3.10.

Message

ABCs must be imported from collections.abc

Valid examples

from collections.abc import Container

from collections.abc import Container, Hashable

from collections.abc import (Container, Hashable)

from collections import defaultdict

from collections import abc

import collections

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import collections.abc

import collections.abc.Container

class MyTest(collections.Something):
    def test(self):
        pass

try:
    from collections.abc import Mapping
except ImportError:
    from collections import Mapping

try:
    from collections.abc import Mapping, Container
except ImportError:
    from collections import Mapping, Container

try:
    from collections.abc import Mapping, Container
except ImportError:
    def fallback_import():
        from collections import Mapping, Container

try:
    from collections.abc import Mapping, Container
except Exception:
    exit()

try:
    from collections import defaultdict
except Exception:
    exit()

Invalid examples

from collections import Container

Suggested fix

from collections.abc import Container

from collections import Container, Hashable

Suggested fix

from collections.abc import Container, Hashable

from collections import (Container, Hashable)

Suggested fix

from collections.abc import (Container, Hashable)

Show more

import collections.Container

Suggested fix

import collections.abc.Container

import collections.Container as cont

Suggested fix

import collections.abc.Container as cont

from collections import defaultdict, Container

Suggested fix

from collections import defaultdict
from collections.abc import Container

from collections import defaultdict
from collections import Container

Suggested fix

from collections import defaultdict
from collections.abc import Container

from collections import defaultdict, Container
from collections import OrderedDict, Mapping

Suggested fix

from collections import defaultdict
from collections.abc import Container
from collections import OrderedDict
from collections.abc import Mapping

class MyTest(collections.Container):
    def test(self):
        pass

Suggested fix

class MyTest(collections.abc.Container):
    def test(self):
        pass