Changelogs » Humanfriendly

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  The major version number was bumped because the bug fix for
  :func:`~humanfriendly.text.pluralize()` is backwards incompatible
  and (even though this seems like very "cosmetic" functionality)
  version numbers are cheap, so who cares 😉.
  **Bug fixes:**
  - Changed :func:`~humanfriendly.format_number()` to properly support negative
  numbers (as suggested in `issue 40`_).
  - Changed :func:`~humanfriendly.text.pluralize()` to generate "1.5 seconds"
  instead of "1.5 second" (as suggested in `issue 43`_).
  - Enhanced :func:`~humanfriendly.text.concatenate()` to support ``conjunction``
  and ``serial_comma`` keyword arguments (as suggested in `issue 30`_).
  - Added :func:`~humanfriendly.text.pluralize_raw()` to select singular or
  plural form without prefixing the count to the text that is returned.
  .. _Release 9.0:
  .. _issue 30:
  .. _issue 40:
  .. _issue 43:


  Added a simple case insensitive dictionary implementation, for details refer to
  the new :mod:`` module.
  .. _Release 8.2:


  - Make it possible to opt out of the output capturing that
  :func:`humanfriendly.testing.run_cli()` sets up by default.
  - Improve feature parity between :class:`humanfriendly.testing.CaptureOutput`
  and my :pypi:`capturer` package to the point where most of the
  :pypi:`humanfriendly` test suite can now run without :pypi:`capturer`.
  **Internal changes:**
  - Refactored the test suite to import all names separately instead of referring
  to identifiers via their modules (my preferences have changed since this code
  was written a long time ago).
  .. _Release 8.1:


  This release is backwards incompatible in several ways, see the notes below.
  - Adopt :func:`functools.wraps()` to make decorator functions more robust.
  - Make the :class:`~humanfriendly.terminal.spinners.Spinner` class more
  customizable. The interval at which spinners are updated and the characters
  used to draw the animation of spinners can now be customized by callers.
  This was triggered by `executor issue 2`_.
  .. note:: The text cursor hiding behavior of spinners has been removed
  because it was found to be problematic (sometimes the text cursor
  would be hidden but not made visible again, which is disorienting
  to say the least).
  - Improve test skipping based on exception types.
  The :class:`humanfriendly.testing.TestCase` class was originally created to
  enable skipping of tests that raise specific exception types on Python 2.6.
  This involved patching test methods, which had the unfortunate side effect
  of generating confusing :pypi:`pytest` output on test failures.
  Since then :pypi:`unittest2` was integrated which provided real
  skipping of tests however removing the old test skipping support
  from the :mod:`humanfriendly.testing` module would have resulted
  in a backwards incompatible change, so I never bothered. I've now
  decided to bite the bullet and get this over with:
  1. I've implemented an alternative (finer grained) strategy based on a
  decorator function that applies to individual test methods, for
  details see :func:`humanfriendly.testing.skip_on_raise()`.
  2. I've removed the test method wrapping from the
  :class:`humanfriendly.testing.TestCase` class.
  .. note:: This change is backwards incompatible, in fact it breaks the
  test suites of two other projects of mine (:pypi:`executor` and
  :pypi:`vcs-repo-mgr`) because they depend on the old test method
  wrapping approach. Both test suites will need to be migrated to
  the :func:`~humanfriendly.testing.skip_on_raise()` decorator.
  **Internal changes:**
  - The "deprecated imports" feature provided by :mod:`humanfriendly.deprecation`
  has been adopted to clean up the maze of (almost but not quite) cyclic import
  dependencies between modules.
  - HTML to ANSI functionality has been extracted to a new
  :mod:`humanfriendly.terminal.html` module.
  - Support for spinners has been extracted to a new
  :mod:`humanfriendly.terminal.spinners` module.
  - The use of positional arguments to initialize
  :class:`~humanfriendly.terminal.spinners.Spinner` objects has been deprecated
  using the new :func:`humanfriendly.deprecation.deprecated_args()` decorator
  .. _Release 8.0:
  .. _executor issue 2:


  Added the :func:`humanfriendly.deprecation.deprecated_args()` decorator function
  which makes it easy to switch from positional arguments to keyword arguments
  without dropping backwards compatibility.
  .. note:: I'm still working on the humanfriendly 8.0 release which was going to
  break backwards compatibility in several ways if it wasn't for the
  tools provided by the new :mod:`humanfriendly.deprecation` module.
  .. _Release 7.3:


  Support for backwards compatible aliases that emit deprecation warnings
  .. note:: I'm currently working on several large refactorings that involve
  moving things around between modules and dreaded having to extend the
  existing maze of (almost but not quite) cyclic import dependencies
  between modules. This new functionality will be adopted to untangle
  the existing maze in the upcoming humanfriendly 8.0 release, which
  bumps the major version number due to this very large change in how
  backwards compatibility is implemented. It is my hope that this new
  functionality will prove to be robust enough to unburden me from the
  less elegant aspects of preserving backwards compatibility 😁.
  Get rid of broken references and noise in the online documentation once and for all:
  - :pypi:`Sphinx` was emitting a screen full of warnings about unknown
  references. These were bothering me because testing the integration between
  Sphinx and :mod:`humanfriendly.deprecation` involved lots of broken
  references as well.
  - Additionally the :mod:`humanfriendly.compat` module introduced a lot of noise
  into the generated documentation because imported classes and their members
  were being included in the documentation, this is now also fixed.
  - Finally I decided to start using ``sphinx-build -nW`` to complain loudly when
  even just one broken reference is found. This should encourage the discipline
  to never introduce broken references again!
  Fixed :mod:`unittest` deprecation warnings in the test suite.
  .. _Release 7.2:


  Fix Python 3 incompatibility (``distutils.spawn``).
  Much to my dismay this morning I ran into the following traceback on a Python


  - Enable Windows native support for ANSI escape sequences. This was brought to
  my attention in `coloredlogs issue 71`_ and `coloredlogs pull request 72`_.
  My experiences with ANSI escape sequences started out as part of the
  :pypi:`coloredlogs` package but eventually I moved the support for ANSI
  escape sequences to the :pypi:`humanfriendly` package. This explains how it
  now makes sense to integrate the Windows native ANSI escape sequence support
  in :pypi:`humanfriendly` as well.
  **Bug fixes:**
  - Accept pluralized disk size units (`26`_). I'm not claiming this is a full
  solution to the problem, far from it. It does lessen the pain a bit (IMHO).
  - Make sure the selected pager is available before trying to run it. While
  testing :pypi:`humanfriendly` on Windows 10 I noticed that ``humanfriendly
  --help`` resulted in nothing but a traceback, because :man:`less` wasn't
  available. That's not human friendly at all 😕 (even if it is Windows 😈).
  .. _Release 7.1:
  .. _coloredlogs issue 71:
  .. _coloredlogs pull request 72:
  .. _26:


  After an unplanned but extended hiatus from the development and maintenance of
  my open source projects I'm now finally starting to pick up some momentum, so
  I'm trying to make the best of it:
  - Merge pull request `24`_: Fix bug in :func:`~humanfriendly.parse_length()` that rounded floats.
  - Merge pull request `32`_: Update hyperlinks in readme.
  - Merge pull request `33`_: Drop support for Python 2.6 and 3.0-3.4
  - Merge pull request `35`_: SVG badge in readme.
  - Merge pull request `36`_: Add support for nanoseconds and microseconds time units
  - Fixed :func:`~humanfriendly.tables.format_rst_table()` omission from
  - Start testing on Python 3.8 and 3.9-dev.
  .. _Release 7.0:
  .. _24:
  .. _32:
  .. _33:
  .. _35:
  .. _36:


  - Added a ``:pypy:`… role for easy linking to packages on the Python Package
  Index, for details refer to :func:`humanfriendly.sphinx.pypi_role()`.
  - Wasted quite a bit of time debugging a MacOS failure on Travis CI caused by a
  broken :man:`pip` installation, fixed by using ```` to bootstrap an
  installation that actually works 😉.
  .. _Release 6.1:


  **Noteworthy changes:**
  - Enable :class:`~humanfriendly.testing.MockedProgram` to customize the shell
  script code of mocked programs. This was added to make it easy to mock a
  program that is expected to generate specific output (I'm planning to use
  this in the :pypi:`linux-utils` test suite).
  - Defined ``__all__`` for all public modules that previously lacked "export
  control" and decided to bump the major version number as a precaution:
  - These changes should not have any impact on backwards compatibility,
  unless I forgot entries, in which case callers can get
  :exc:`~exceptions.ImportError` exceptions...
  - Imports of public modules were previously exported (implicitly) and this
  pollutes code completion suggestions which in turn can encourage bad
  practices (not importing things using their "canonical" name).
  - I started developing the ``humanfriendly`` package years before I learned
  about the value of defining ``__all__`` and so some modules lacked a
  definition until now. I decided that now was as good a time as any
  to add those definitions 😇.
  **Miscellaneous changes:**
  - Simplified the headings in ``docs/api.rst`` so that only the module names
  remain. This was done because Sphinx doesn't support nested links in HTML
  output and thus generated really weird "Table of Contents" listings.
  - Fixed the reStructuredText references in the documentation of
  :func:`~humanfriendly.prompts.prompt_for_choice()`. This function is imported
  from :mod:`humanfriendly.prompts` to :mod:`humanfriendly` (for backwards
  compatibility) where it can't use relative references to refer to the other
  functions in the :mod:`humanfriendly.prompts` module.
  - Changed the ``Makefile`` to default to Python 3 for development, make sure
  ``flake8`` is always up-to-date and silence the few targets whose commands
  were not already silenced.
  - Embedded quite a few Python API references into recent changelog entries,
  just because I could (I ❤️  what hyperlinks can do for the usability of
  technical documentation, it gives a lot more context).
  .. _Release 6.0:


  - Added custom ``:man:`… role for easy linking to Linux manual pages to
  the :mod:`humanfriendly.sphinx` module.
  - Changed rendering of pretty tables to expand tab characters to spaces:
  Until now pretty tables did not take the variable width of tab characters
  into account which resulted in tables whose "line drawing characters" were
  visually misaligned. Tabs are now expanded to spaces using
  - Stop testing on Python 2.6 and drop official support. The world (including
  Travis CI) has moved on and preserving Python 2.6 compatibility was clearly
  starting to drag the project down...
  I decided to bump the major version number because each of these changes can be
  considered backwards incompatible in one way or another and version numbers are
  cheap anyway so there 😛.
  .. _Release 5.0:


  - Added :func:`humanfriendly.text.generate_slug()` function.
  - Fixed "invalid escape sequence" DeprecationWarning (pointed out by Python >= 3.6).
  - Fought Travis CI (for way too long) in order to restore Python 2.6, 2.7, 3.4,
  3.5, 3.6 and 3.7 compatibility in the Travis CI configuration (unrelated to
  the ``humanfriendly`` package itself).
  .. _Release 4.18:


  - Add Python 3.7 to versions tested on Travis CI and using ``tox`` and document
  compatibility with Python 3.7.
  - Add rudimentary caching decorator for functions:
  Over the years I've used several variations on this function in multiple
  projects and I'd like to consolidate all of those implementations into a
  single one that's properly tested and documented.
  Due to the simplicity and lack of external dependencies it seemed kind of
  fitting to include this in the ``humanfriendly`` package, which has become
  a form of extended standard library for my Python projects 😇.
  .. _Release 4.17:


  Yet another ANSI to HTML improvement: Emit an ANSI reset code before emitting
  ANSI escape sequences that change styles, so that previously activated styles
  don't inappropriately "leak through" to the text that follows.
  .. _Release 4.16.1:


  More HTML to ANSI improvements:
  - Added :func:`humanfriendly.text.compact_empty_lines()` function.
  - Enable optional ``callback`` argument to
  - Added a code sample and screenshot to the
  :class:`humanfriendly.terminal.HTMLConverter` documentation.
  - Emit vertical whitespace for block tags like ``<div>``, ``<p>`` and ``<pre>``
  and post-process the generated output in ``__call__()`` to compact empty lines.
  - Don't pre-process preformatted text using the user defined text callback.
  - Improve robustness against malformed HTML (previously an ``IndexError`` would
  be raised when a closing ``</a>`` tag was encountered without a corresponding
  opening ``<a>`` tag).
  - Emit an ANSI reset code when :func:`humanfriendly.terminal.html.HTMLConverter.close()`
  is called and a style is still active (improves robustness against malformed HTML).
  .. _Release 4.16:


  Bug fixes for HTML to ANSI conversion.
  HTML entities were being omitted from conversion because I had neglected to
  define the ``handle_charref()`` and ``handle_entityref()`` methods (whose
  definitions are so conveniently given in the documentation of the
  ``HTMLParser`` class 😇).
  .. _Release 4.15.1:


  Added the :func:`humanfriendly.terminal.html_to_ansi()` function which is a
  shortcut for the :class:`humanfriendly.terminal.HTMLConverter` class that's
  based on ``html.parser.HTMLParser``.
  This new functionality converts HTML with simple text formatting tags like
  ``<b>`` for bold, ``<i>`` for italic, ``<u>`` for underline, ``<span>`` for
  colors, etc. to text with ANSI escape sequences.
  I'm still working on that awesome new project (update: see chat-archive_), this
  functionality was born there but seemed like a useful addition to the
  ``humanfriendly`` package, given the flexibility that this provides 😇.
  .. _Release 4.15:


  Support for 24-bit (RGB) terminal colors. Works by accepting a tuple or
  list with three integers representing an RGB (red, green, blue) color.
  .. _Release 4.14:


  Support for *italic* text rendering on the terminal.
  I'm working on an awesome new project (update: see chat-archive_) that's almost
  ready to publish, but then I noticed that I couldn't render italic text on the
  terminal using the humanfriendly package. I checked and sure enough my terminal
  supported it just fine, so I didn't see any reason not to fix this now 😇.
  .. _Release 4.13:
  .. _chat-archive:


  It was reported in issue `28`_ that ``humanfriendly --demo`` didn't work
  on Python 3 due to two unrelated ``TypeError`` exceptions. First I added
  a failing regression test to the test suite (`here's the failing build
  and then I applied the changes suggested in issue `28`_, confirming that both
  issues are indeed fixed because the test now passes (`here's the successful
  build <>`_).
  .. _Release 4.12.1:
  .. _28:


  - Make :func:`humanfriendly.format_timespan()` accept
  :class:`datetime.timedelta` objects (fixes `27`_).
  - Add ``license`` key to ```` script (pointed out to me in `coloredlogs
  pull request 53 <>`_).
  .. _Release 4.12:
  .. _27:


  Added this changelog as requested in `23`_.
  I've held off on having to keep track of changelogs in my open source
  programming projects until now (2018) because it's yet another piece of
  bookkeeping that adds overhead to project maintenance versus just writing the
  damn code and throwing it up on GitHub :-p. However all that time I felt bad
  for not publishing change logs and I knew that requests would eventually come
  in and indeed in the past months I've received two requests in `23`_ and in
  `issue 55 of coloredlogs <>`_.
  I actually wrote a Python script that uses the ``git tag`` and ``git
  for-each-ref`` commands to automatically generate a ``CHANGELOG.rst``
  "prototype" (requiring manual editing to clean it up) to bootstrap the contents
  of this document. I'm tempted to publish that now but don't want to get
  sidetracked even further :-).
  .. _Release 4.11:
  .. _23:


  Added the :func:`humanfriendly.Timer.sleep()` method to sleep "no more than"
  the given number of seconds.
  .. _Release 4.10:


  Added the :func:`humanfriendly.tables.format_rst_table()` function to render
  RST (reStructuredText) tables.
  .. _Release 4.9:


  Added the :func:`humanfriendly.coerce_pattern()` function. I previously created
  this for vcs-repo-mgr_ and now need the same thing in qpass_ so I'm putting it
  in humanfriendly :-) because it kind of fits with the other coercion functions.
  .. _Release 4.8:
  .. _vcs-repo-mgr:
  .. _qpass:


  - Added support for background colors and 256 color mode (related to `issue 35
  on the coloredlogs issue tracker <>`_).
  - Added tests for :func:`~humanfriendly.terminal.output()`,
  :func:`~humanfriendly.terminal.message()` and
  .. _Release 4.7:


  Fixed issue 21 by implementing support for bright (high intensity) terminal colors.
  .. _Release 4.6:
  .. _21:


  Fixed issue `16` by merging pull request `17`_: Extend byte ranges, add RAM
  output to command line.
  In the merge commit I removed the ``--format-bytes`` option that `17`_ added
  and instead implemented a ``--binary`` option which changes ``--format-size``
  to use binary multiples of bytes (base-2) instead of decimal multiples of bytes
  .. _Release 4.5:
  .. _16:
  .. _17:


  - Fixed ``ImportError`` exception on Windows due to interactive prompts (fixes `19`_ by merging `20`_.).
  - Enable MacOS builds on Travis CI and document MacOS compatibility.
  - Change Sphinx documentation theme.
  .. _Release 4.4.2:
  .. _19:
  .. _20:


  Include the Sphinx documentation in source distributions (same rationales as
  for the similar change made to 'coloredlogs' and 'verboselogs').
  .. _Release 4.4.1:


  Added the :func:`~humanfriendly.testing.make_dirs()` and
  :func:`~humanfriendly.testing.touch()` functions.
  .. _Release 4.4:


  Don't log duplicate output in :func:`~humanfriendly.testing.run_cli()`.
  .. _Release 4.3:


  Automatically reconfigure logging in :func:`~humanfriendly.testing.run_cli()`.
  .. _Release 4.2:


  Improve :func:`~humanfriendly.testing.run_cli()` to always log standard error
  as well.
  .. _Release 4.1:


  Backwards incompatible improvements to :func:`~humanfriendly.testing.run_cli()`.
  I just wasted quite a bit of time debugging a Python 3.6 incompatibility in
  deb-pkg-tools (see build 251688788_) which was obscured by my naive
  implementation of the ``run_cli()`` function. This change is backwards
  incompatible because ``run_cli()`` now intercepts all exceptions whereas
  previously it would only intercept ``SystemExit``.
  .. _Release 4.0:
  .. _251688788:


  Make it easy to mock the ``$HOME`` directory.
  .. _Release 3.8:


  Enable customizable skipping of tests.
  .. _Release 3.7:


  Improved the robustness of the :class:`~humanfriendly.testing.PatchedAttribute`
  and :class:`~humanfriendly.testing.PatchedItem` classes.
  .. _Release 3.6.1:


  - Made the retry limit in interactive prompts configurable.
  - Refactored the makefile and Travis CI configuration.
  .. _Release 3.6:


  Added ``humanfriendly.testing.TestCase.assertRaises()`` enhancements.
  .. _Release 3.5:


  Bug fix for Python 3 syntax incompatibility.
  .. _Release 3.4.1:


  Promote the command line testing function to the public API.
  .. _Release 3.4:


  - Added the :func:`humanfriendly.text.random_string()` function.
  - Added the :mod:`humanfriendly.testing` module with unittest helpers.
  - Define ``humanfriendly.text.__all__``.
  .. _Release 3.3:


  Added the ``humanfriendly.terminal.output()`` function to auto-encode terminal
  output to avoid encoding errors and applied the use of this function in various
  places throughout the package.
  .. _Release 3.2:


  Improved usage message parsing and rendering.
  While working on a new project I noticed that the ``join_lines()`` call in
  ``render_usage()`` could corrupt lists as observed here: (check the part after 'Supported locations include:')
  To be honest I'm not even sure why I added that ``join_lines()`` call to begin
  with and I can't think of any good reasons to keep it there, so gone it is!
  .. _Release 3.1:


  - Added support for min, mins abbreviations for minutes based on `14`_.
  - Added Python 3.6 to supported versions on Travis CI and in documentation.
  I've decided to bump the major version number after merging pull request `14`_
  because the ``humanfriendly.time_units`` data structure was changed. Even
  though this module scope variable isn't included in the online documentation,
  nothing stops users from importing it anyway, so this change is technically
  backwards incompatible. Besides, version numbers are cheap. In fact, they are
  infinite! :-)
  .. _Release 3.0:
  .. _14:


  Make ``usage()`` and ``show_pager()`` more user friendly by changing how
  :man:`less` as a default pager is invoked (with specific options).
  .. _Release 2.4:


  Bug fix: Don't hard code conditional dependencies in wheels.
  .. _Release 2.3.2:


  Fix ``parse_usage()`` tripping up on commas in option labels.
  .. _Release 2.3.1:


  - Switch to monotonic clock for timers based on `13`_.
  - Change ```` to ```` everywhere.
  - Improve intersphinx references in documentation.
  - Minor improvements to setup script.
  .. _Release 2.3:
  .. _13:


  - Improve use of timers as context managers by returning the timer object (as originally intended).
  - Minor improvements to reStructuredText formatting in various docstrings.
  .. _Release 2.2.1:


  - Fix and add a test for ``parse_date()`` choking on Unicode strings.
  - Only use "readline hints" in prompts when standard input is a tty.
  .. _Release 2.2:


  Added ``clean_terminal_output()`` function to sanitize captured terminal output.
  .. _Release 2.1:


  Update ``README.rst`` based on the changes in 2.0 by merging `12`_.
  .. _Release 2.0.1:
  .. _12:


  Proper support for IEEE 1541 definitions of units (fixes `4`_, merges `8`_ and `9`_).
  .. _Release 2.0:
  .. _4:
  .. _8:
  .. _9:


  - Fix and add tests for the timespan formatting issues reported in issues `10`_ and `11`_.
  - Refactor ``Makefile``, switch to ``py.test``, add wheel support, etc.
  .. _10:
  .. _11:
  .. _Release 1.44.9:


  - Fixed `issue 7`_ (``TypeError`` when calling ``show_pager()`` on Python 3) and added a test.
  - Minor improvements to the ```` script.
  - Stop testing tags on Travis CI.
  .. _Release 1.44.8:
  .. _issue 7:


  Minor improvements to usage message reformatting.
  .. _Release 1.44.7:


  Remove an undocumented ``.strip()`` call  from ``join_lines()``.
  Why I noticed this: It has the potential to eat significant white
  space in usage messages that are marked up in reStructuredText syntax.
  Why I decided to change it: The behavior isn't documented and on
  second thought I wouldn't expect a function called ``join_lines()``
  to strip any and all leading/trailing white space.
  .. _Release 1.44.6:


  Improved the usage message parsing algorithm (also added a proper test). Refer
  to ``test_parse_usage_tricky()`` for an example of a usage message that is now
  parsed correctly but would previously confuse the dumb "parsing" algorithm in
  .. _Release 1.44.5:


  Made usage message parsing a bit more strict. Admittedly this still needs a lot
  more love to make it more robust but I lack the time to implement this at the
  moment. Some day soon! :-)
  .. _Release 1.44.4:


  Unbreak conditional importlib dependency after breakage observed here:
  .. _Release 1.44.3:


  - Make conditional importlib dependency compatible with wheels: While running
  tox tests of another project of mine that uses the humanfriendly package I
  noticed a traceback when importing the humanfriendly package (because
  importlib was missing). After some digging I found that tox uses pip to
  install packages and pip converts source distributions to wheel distributions
  before/during installation, thereby dropping the conditional importlib
  - Added the Sphinx extension trove classifier to the ```` script.
  .. _Release 1.44.2:


  - Fixed a non-fatal but obviously wrong log format error in ``prompt_for_choice()``.
  - Added Python 3.5 to supported versions on Travis CI and in the documentation.
  .. _Release 1.44.1:


  Added the ``humanfriendly.sphinx`` module with automagic usage message
  reformatting and a bit of code that I'd been copying and pasting between
  ``docs/`` scripts for years to include magic methods, etc in
  Sphinx generated documentation.
  .. _Release 1.44:


  Bug fix for Python 2.6 compatibility in ```` script.
  .. _Release 1.43.1:


  Replaced ``import_module()`` with a conditional dependency on ``importlib``.
  .. _Release 1.43:


  Added proper tests for ANSI escape sequence support.
  .. _Release 1.42:


  - Moved hard coded ANSI text style codes to a module level ``ANSI_TEXT_STYLES`` dictionary.
  - Improved the related error reporting based on the new dictionary.
  .. _Release 1.41:


  Added support for custom delimiters in ``humanfriendly.text.split()``.
  .. _Release 1.40:


  Added the ``humanfriendly.compat`` module to group Python 2 / 3 compatibility logic.
  .. _Release 1.39:


  - Added the ``prompt_for_confirmation()`` function to render (y/n) prompts.
  - Improved the prompt rendered by ``prompt_for_choice()``.
  - Extracted supporting prompt functionality to separate functions.
  .. _Release 1.38:


  - Added support for wrapping ANSI escape sequences in "readline hints".
  - Work around incompatibility between ``flake8-pep257==1.0.3`` and ``pep257==0.7.0``.
  .. _Release 1.37:


  Added ``message()`` and ``warning()`` functions to write informational and
  warning messages to the terminal (on the standard error stream).
  .. _Release 1.36:


  Implemented the feature request in issue 6: Support for milleseconds in
  timespan parsing/formatting. Technically speaking this breaks backwards
  compatibility but only by dropping a nasty (not documented) implementation
  detail. Quoting from the old code::
  All of the first letters of the time units are unique, so
  although this check is not very strict I believe it to be
  That no longer worked with [m]illiseconds versus [m]inutes as was
  also evident from the feature request / bug report on GitHub.
  .. _Release 1.35:


  Implemented and added checks to enforce PEP-8 and PEP-257 compliance.
  .. _Release 1.34:


  Added ``format_length()`` and `parse_length()`` functions via `pull request 5`_.
  .. _Release 1.33:
  .. _pull request 5:


  Added the ``humanfriendly.text.split()`` function.
  .. _Release 1.32:


  Added support for rendering of usage messages to reStructuredText.
  .. _Release 1.31:


  Started moving functions to separate modules.
  .. _Release 1.30:


  Added the ``parse_timespan()`` function.
  .. _Release 1.29:


  Extracted the "new" ``tokenize()`` function from the existing ``parse_size()`` function.
  .. _Release 1.28:


  Changed table formatting to right-align table columns with numeric data (and
  pimped the documentation).
  .. _Release 1.27:


  Make table formatting 'smart' by having it automatically handle overflow of
  columns by switching to a different more verbose vertical table layout.
  .. _Release 1.26:


  - Bug fix for a somewhat obscure ``UnicodeDecodeError`` in ```` on Python 3.
  - Travis CI now also runs the test suite on PyPy.
  - Documented PyPy compatibility.
  .. _Release 1.25.1:


  Added the ``humanfriendly.terminal.usage()`` function for nice rendering of
  usage messages on interactive terminals (try ``humanfriendly --help`` to see it
  in action).
  .. _Release 1.25:


  Added the ``humanfriendly.terminal`` module with support for ANSI escape
  sequences, detecting interactive terinals, finding the terminal size, etc.
  .. _Release 1.24:


  Bug fix for Python 3 compatibility in ``format_table()``.
  .. _Release 1.23.1:


  Added ``format_table()`` function to format tabular data in simple textual tables.
  .. _Release 1.23:


  Added additional string formatting functions ``compact()``, ``dedent()``,
  ``format()``, ``is_empty_line()`` and ``trim_empty_lines()``.
  .. _Release 1.22:


  Added support for formatting numbers with thousands separators.
  .. _Release 1.21:


  - Added a simple command line interface.
  - Added trove classifiers to ````.
  .. _Release 1.20:


  Made it possible to use spinners as context managers.
  .. _Release 1.19:


  Added a ``Spinner.sleep()`` method.
  .. _Release 1.18:


  - Improved interaction between spinner & verbose log outputs: The spinner until
  now didn't end each string of output with a carriage return because then the
  text cursor would jump to the start of the screen line and disturb the
  spinner, however verbose log output and the spinner don't interact well
  because of this, so I've decided to hide the text cursor while the spinner is
  - Added another example to the documentation of ``parse_date()``.
  .. _Release 1.17:


  - Change spinners to use the 'Erase in Line' ANSI escape code to properly clear screen lines.
  - Improve performance of Travis CI and increase multiprocessing test coverage.
  .. _Release 1.16:


  - Added support for ``AutomaticSpinner`` that animates without requiring ``step()`` calls.
  - Changed the Python package layout so that all ``*.py`` files are in one directory.
  - Added tests for ``parse_path()`` and ``Timer.rounded``.
  .. _Release 1.15:


  - Changed ``coerce_boolean()`` to coerce empty strings to ``False``.
  - Added ``parse_path()`` function (a simple combination of standard library functions that I've repeated numerous times).
  .. _Release 1.14:


  Added support for spinners with an embedded timer.
  .. _Release 1.13:


  Added support for rounded timestamps.
  .. _Release 1.12:


  Added ``coerce_boolean()`` function.
  .. _Release 1.11:


  Improved ``pluralize()`` by making it handle the simple case of pluralizing by adding 's'.
  .. _Release 1.10:


  Improved the documentation by adding a few docstring examples via pull request `3`_.
  .. _Release 1.9.6:
  .. _3:


  Improved the test suite by making the timing related tests less sensitive to
  slow test execution. See but the same
  thing can happen anywhere. When looked at from that perspective the fix I'm
  committing here really isn't a fix, but I suspect it will be fine :-).
  .. _Release 1.9.5:


  - Fixed Python 3 compatibility (``input()`` versus ``raw_input()``). See
  - Removed a ``print()`` in the test suite, left over from debugging.
  .. _Release 1.9.4:


  - Automatically disable ``Spinner`` when ``stream.isatty()`` returns ``False``.
  - Improve the makefile by adding ``install`` and ``coverage`` targets.
  - Remove the makefile generated by Sphinx (all we need from it is one command).
  - Add unit tests for ``prompt_for_choice()`` bringing coverage back up to 95%.
  .. _Release 1.9.3:


  Added support for 'B' bytes unit to ``parse_size()`` via `pull request 2`_.
  .. _Release 1.9.2:
  .. _pull request 2:


  Improved the ``prompt_for_choice()`` function by clearly presenting the default
  choice (if any).
  .. _Release 1.9.1:


  Added the ``prompt_for_choice()`` function.
  .. _Release 1.9:


  Enable ``Spinner`` to show progress counter (percentage).
  .. _Release 1.8.6:


  Make ``Timer`` objects "resumable".
  .. _Release 1.8.5:


  Make the ``Spinner(label=...)`` argument optional.
  .. _Release 1.8.4:


  Make it possible to override the label for individual steps of spinners.
  .. _Release 1.8.3:


  Automatically rate limit ``Spinner`` instances.
  .. _Release 1.8.2:


  - Improve Python 3 compatibility: Make sure sequences passed to ``concatenate()`` are lists.
  - Submit test coverage from Travis CI to
  - Increase test coverage of ``concatenate()``, ``Spinner()`` and ``Timer()``.
  - Use ``assertRaises()`` instead of ``try``, ``except`` and ``isinstance()`` in test suite.
  .. _Release 1.8.1:


  - Added support for Python 3 thanks to a pull request.
  - Document the supported Python versions (2.6, 2.7 and 3.4).
  - Started using Travis CI to automatically run the test suite.
  .. _Release 1.8:


  Bug fix for ``concatenate()`` when given only one item.
  .. _Release 1.7.1:


  Added functions ``concatenate()`` and ``pluralize()``, both originally
  developed in private scripts.
  .. _Release 1.7:


  Bug fix: Don't raise an error in ``format_path()`` if $HOME isn't set.
  .. _Release 1.6.1:


  Added a ``Spinner`` class that I originally developed for `pip-accel
  .. _Release 1.6:


  Added a ``Timer`` class to easily keep track of long running operations.
  .. _Release 1.5:


  Fixed various edge cases in ``format_path()``, making it more robust.
  .. _Release 1.4.3:


  Improved the project description in ```` and added a link to online
  documentation on PyPI.
  .. _Release 1.4.2:


  Renamed the package from ``human-friendly`` to ``humanfriendly``.
  .. _Release 1.4.1:


  Added the ``parse_date()`` function.
  .. _Release 1.4:


  - Improved the documentation by adding lots of examples.
  - Renamed the arguments to the ``format_size()`` and ``format_timespan()`` functions.
  .. _Release 1.3.1:


  Added the ``format_timespan()`` function.
  .. _Release 1.3:


  Started using Sphinx to generate API documentation from docstrings.
  .. _Release 1.2:


  Added the ``format_path()`` function.
  .. _Release 1.1: