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General Python tools

Project description

This is a collection of utility modules for Python projects.


  • buildout module, for buildout-built projects:

    Function checkPathForPackage to check a given package against a versions whitelist. Useful if you like to constain the versions of that package without actually requiring it.

  • coding module:

    Factory functions to create safe_encode resp. safe_decode functions as needed

  • classes module:

    Several simple but useful classes derived from Python dicts, e.g. Mirror and Proxy

  • debug module:

    • trace_this decorator
  • dicts module:

    • several tools to work with standard dictionaries
  • files module:

    • functions related to files; for now make_mtime_checker
  • html module:

    • HtmlEntityProxy - a dict which returns unicode characters when given a named HTML entity
  • http module:

    • extract_hostname (using url.split and raising ValueError)
  • lands0 module:

    • several tools to work with lists and strings
  • minifuncs module:

    • very small functions, for some cases where functions are used as arguments
  • profile module:

    • a StopWatch context manager and @profile decorator
  • sequences module:

    • tools for sequences, e.g. inject_indexes
  • times module:

    • functions related to date and/or time calculations


The modules are documented by doctests. Apart from this, we don’t have real user documentation yet (sorry).


Simply install by using pip:

pip install

or by adding it to your buildout:



eggs =

and then running bin/buildout


If you are having issues, please let us know; please use the issue tracker mentioned above.


The project is licensed under the GNU General Public License v2 (GPLv2).



1.2.3 (2019-01-30)

  • new function update_dict in dicts module (which takes a deletions list argument)
  • buildout.extract_package_and_version supports egg specs with subpaths as well (child of an /eggs/ directory)
  • buildout.checkPathForPackage logs the invalid package entries if the package in question could not be found
  • lands0.groupstring supports cumulate option (default: False) [tobiasherp]

1.2.2 (2018-11-08)

  • new module buildout for use in buildout-built projects: use the checkPathForPackage function to check an installed package against a versions whitelist [tobiasherp]

1.2.1 (2018-09-17)

  • new module dates:
    • make_date_parser factory to create a parse_date function which understands multiple date formats
    • make_date_formatter factory to create a function which formats date, given as a datetime object or a tuple of int
  • new module profile:
    • StopWatch context manager and @profile decorator
  • new module mock:
    • a few small classes for use in doctests
    • the same module as
  • module debug:
    • new decorators trace_this, log_result
    • new function print_indented
    • new factory function make_sleeper
  • module dicts:
    • new function make_key_injector
  • module minifuncs:
    • new function translate_dummy
  • module sequences:
    • new function nocomment_split
    • new function columns [tobiasherp]
  • module lands0:
    • new function join_stripped
  • License changed to GPLv2

1.2 (2018-07-11)

  • breaking changes:
    • classes: Proxy is now a factory rather than a class
  • modules debug, dicts, lands0, minifuncs [tobiasherp]

1.1 (2018-06-12)

  • modules sequences, times, files
  • Minor Bugfixes [tobiasherp]

1.0 (2018-06-11)

  • Initial release, including modules classes, html, http and coding [tobiasherp]

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