hcs_utils 1.5

My personal library collecting some useful snippets.

About

This is my personal collection of snippets that I use in multiple projects. Each one feels a bit to small to merit it’s own library.

So what does it include?

• memoize decorator (caching)

• a storage class wrapping a dict.

• unittest assert functions.

• Functions for handling large JSON documents.

• list_dir(path) –> (dirnames, filenames)

• PID file locking

• A synchronization decorator

Feedback and getting involved

Send feedback and bug reports by email to hcs at furuvik dot net.

• Code Repository: http://gitorious.org/hcs_utils

News

1.5

Release date: 2014-02-11

• Added support to path.watch_files_callback for controlled shutdown

• Lock, improved exception handling for edge case.

1.4

Release date: 2013-11-19

• Fix for daemon, started even if it already was started.

1.4rc5

Release date: 2013-04-16

• Fix for daemon sigterm handler

1.4rc4

Release date: 2013-04-15

• Added logging to Daemon

1.4rc3

Release date: 2013-04-11

• fixed bug relating to daemon handle sigterm

• Added option to to force recalc of cached value for memoized call

1.4rc2

Release date: 2013-03-21

• Added unicode support to eq_str

1.4rc1

Release date: 2012-11-16

• Compatible with python 2.7 and 3.3

• Fixed problem in Lock, timeouts where not used when other thread in same process had the lock.

1.3

Release date: 2012-11-10

No changes since 1.3rc6

1.3rc6

Release date: 2012–

• Storage: added storagify and unstoragify (to/from json style data structure)

1.3rc5

Release date: 2011-12-19

• lock: Improved exception messages (added locking pid).

• lock: Added some debug logging.

1.3rc4

Release date: 2011-09-13

• Storage: Added generic support for key normalization.

1.3rc3

Release date: 2011-09-06

• Storage: Added support for running case_insensitive.

• Storage: Added support for default_factory.

1.3rc2

Release date: 2011-08-25

• Storage: Minor fixes

• daemon: A new module for creating a UNIX daemon.

• lock: Added the option to steal a lock.

1.3rc1

Release date: 2011-07-11

• PEP8 compliant

• Better test coverage

• added IDLock class to lock module

• Memoize optimization

• path.watch_file

1.3a9

Release date: 2011-05-31

• Memoize: bugfixes

1.3a8

Release date: 2011-05-17

• ItemStore: fixed bugs in rename and move

1.3a7

Release date: 2011-04-26

• Memoize: Added support for instance methods

1.3a6

Release date: 2011-04-11

• Added timeout to lockfile

1.3a5

Release date: 2011-04-06

• Added locking to itemstore

• Added a file change watcher

• Some bugfixes

• PEP8 cleanup

1.3a4

Release date: 2011-02-11

• Optimized Store.__contains__

• memoized functions can now be recursive

1.3a3

• 1.3 will only support Python 2.6 and 2.7

• Testing using py.test instead of nose

• added hcs_utils.path.walkfiles() recursive file generator

• hcs_utils.itemstore Kind of on disk object/file/directory store

• some smaller functionality

• bunch of fixes

1.2

Release date: 2011-01-07

No changes since 1.2rc5

1.2.rc5

Release date: 2010-11-30

• unittest.eq_json, sorted output so that it can be used with dicts.

• unittest switched place on ndiff arguments

1.2.rc4

Release date: 2010-06-15

• Dropped support for Python 2.5

• Added hcs_utils.collections.ListBuilder, a nice way to manually build lists.

• Added hcs_utils.lock.Lock, Interprocess locking using a PID symlink.

• Added hcs_utils.path.scan_for_new_files()

• Added hcs_utils.path.tempdir context.

• Added hcs_utils.storage.Storage.__contains__ and __iter__

• Added hcs_utils.storage.json* Storage vs. json helpers

• Added hcs_utils.threading.synchronization decorator.

• Memoize is now thread safe.

• hcs_utils.path.list_dir now returns a namedtuple

1.1

Release date: 2010-04-22

• Fixed unpickeling of Storage objects.

1.0

Release date: 2010-04-18

• Initial release