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    "info": {
        "author": "Cameron Simpson",
        "author_email": "cs@cskk.id.au",
        "bugtrack_url": null,
        "classifiers": [
            "Development Status :: 4 - Beta",
            "Intended Audience :: Developers",
            "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
            "Operating System :: OS Independent",
            "Programming Language :: Python",
            "Programming Language :: Python :: 2",
            "Programming Language :: Python :: 3",
            "Topic :: Software Development :: Libraries :: Python Modules"
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        "description": "Facilities for shared access to files.\n\n## Function `lockfile(path, ext=None, poll_interval=None, timeout=None)`\n\nA context manager which takes and holds a lock file.\n\nParameters:\n* `path`: the base associated with the lock file.\n* `ext`:\n  the extension to the base used to construct the lock file name.\n  Default: `\".lock\"`\n* `timeout`: maximum time to wait before failing,\n  default None (wait forever).\n* `poll_interval`: polling frequency when timeout is not 0.\n\n## Class `SharedAppendFile`\n\nA base class to share a modifiable file between multiple users.\n\nThe use case was driven from the shared CSV files used by\n`cs.nodedb.csvdb.Backend_CSVFile`, where multiple users can\nread from a common CSV file, and coordinate updates with a\nlock file.\n\nThis presents the following interfaces:\n* `__iter__`: yields data chunks from the underlying file up\n  to EOF; it blocks no more than reading from the file does.\n  Note that multiple iterators share the same read pointer.\n\n* `open`: a context manager returning a writable file for writing\n  updates to the file; it blocks reads from this instance\n  (though not, of course, by other users of the file) and\n  arranges that users of `__iter__` do not receive their own\n  written data, thus arranging that `__iter__` returns only\n  foreign file updates.\n\nSubclasses would normally override `__iter__` to parse the\nreceived data into their natural records.\n\n## Class `SharedAppendLines`\n\nMRO: `SharedAppendFile`  \nA line oriented subclass of `SharedAppendFile`.\n\n## Class `SharedCSVFile`\n\nMRO: `SharedAppendLines`, `SharedAppendFile`  \nShared access to a CSV file in UTF-8 encoding.",
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        "keywords": "python2,python3",
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        "name": "cs.sharedfile",
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        "summary": "facilities for shared access to files",
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