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Conditionally enter a context manager

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conditional(condition, contextmanager)

Enter contextmanager only if condition is true.


The conditional context manager comes handy when you always want to execute a with-block but only conditionally want to apply its context manager.

If you find yourself writing code like this:


Consider replacing it with:

with conditional(CONDITION, CONTEXTMANAGER()):


Say we want to ignore signals when a pager application is in the foreground, but not otherwise:

from conditional import conditional

with conditional(has_pager(cmd), ignoresignals()):


For further details please refer to the API Documentation.


1.4 - 2022-03-09

  • Add Python 3.8-3.10 to tox.ini. Remove old Python versions. [stefan]

  • Replace deprecated python test in tox.ini. [stefan]

  • Remove deprecated test_suite and tests_require from [stefan]

  • Move metadata to setup.cfg and add a pyproject.toml file. [stefan]

  • Include tests in sdist but not in wheel. [stefan]

1.3 - 2019-01-28

  • Add [stefan]

  • Release as wheel. [stefan]

1.2 - 2017-02-05

  • Support Python 2.6-3.6 without 2to3. [stefan]

  • Add a LICENSE file. [stefan]

1.1 - 2014-04-19

  • Remove setuptools from install_requires because it isn’t. [stefan]

1.0 - 2012-05-16

  • Initial release. [stefan]

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