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Project Description

Overview

Portalocker is a library to provide an easy API to file locking.

Originally created as a Python Recipe by Jonathan Feinberg and Lowell Alleman http://code.activestate.com/recipes/65203-portalocker-cross-platform-posixnt-api-for-flock-s/

The module is currently maintained by Rick van Hattem <Wolph@wol.ph>. The project resides at https://github.com/WoLpH/portalocker . Bugs and feature requests can be submitted there. Patches are also very welcome.

Examples

To make sure your cache generation scripts don’t race, use the Lock class:

>>> import portalocker
>>> with portalocker.Lock('somefile', timeout=1) as fh:
    print >>fh, 'writing some stuff to my cache...'

To customize the opening and locking a manual approach is also possible:

>>> import portalocker
>>> file = open('somefile', 'r+')
>>> portalocker.lock(file, portalocker.LOCK_EX)
>>> file.seek(12)
>>> file.write('foo')
>>> file.close()

There is no explicit need to unlock the file as it is automatically unlocked after file.close(). If you still feel the need to manually unlock a file than you can do it like this:

>>> portalocker.unlock(file)

Do note that your data might still be in a buffer so it is possible that your data is not available until you flush() or close().

More examples can be found in the tests.

Changelog

See the changelog page.

License

See the LICENSE file.

Release History

Release History

1.0.0

This version

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0.6.1

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0.6.0

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0.5.7

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0.5.6

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0.5.5

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0.5.4

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0.5.3

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0.5.1

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0.5

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0.4

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0.3

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0.2

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0.1

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Download Files

Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
portalocker-1.0.0-py2.py3-none-any.whl (9.1 kB) Copy SHA256 Checksum SHA256 3.5 Wheel Sep 27, 2016
portalocker-1.0.0.tar.gz (8.8 kB) Copy SHA256 Checksum SHA256 Source Sep 27, 2016

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