The zc.lockfile package provides a basic portable implementation of interprocess locks using lock files. The purpose if not specifically to lock files, but to simply provide locks with an implementation based on file-locking primitives. Of course, these locks could be used to mediate access to other files. For example, the ZODB file storage implementation uses file locks to mediate access to file-storage database files. The database files and lock file files are separate files.
| Package Version | Update ID | Released | Package Hub Version | Platforms | Subpackages |
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| 2.0-bp152.1.10 info | GA Release | 2020-04-17 | 15 SP2 |
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| 1.2.1-bp151.3.3 info | GA Release | 2019-07-17 | 15 SP1 |
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| 1.2.1-bp150.2.4 info | GA Release | 2018-07-30 | 15 |
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| 1.2.1-bp150.2.3 info | GA Release | 2018-07-30 | 15 |
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