renumerate 1.0.12

Reverse enumerate.

renumerate

Reverse enumerate.

Overview

renumerate(sequence, start=len(sequence)-1, end=0):

Return an enumerate object.

sequence must be an object that has a __reversed__() method or supports the

sequence protocol (the __len__() method and the __getitem__() method with

integer arguments starting at 0).

The __next__() method of the iterator returned by renumerate() returns a tuple

containing a count (from start which defaults to len(sequence) - 1 or ends at

end which defaults to 0 - but not both) and the values obtained from reverse

iterating over sequence.

>>> from renumerate import renumerate
>>> seasons = ['Spring', 'Summer', 'Fall', 'Winter']
>>> list(renumerate(seasons))
[(3, 'Winter'), (2, 'Fall'), (1, 'Summer'), (0, 'Spring')]
>>> list(renumerate(seasons, start=4))
[(4, 'Winter'), (3, 'Fall'), (2, 'Summer'), (1, 'Spring')]
>>> list(renumerate(seasons, end=2))
[(5, 'Winter'), (4, 'Fall'), (3, 'Summer'), (2, 'Spring')]

Equivalent to:

def renumerate(sequence, start=None, end=None):
    if start is not None and end is not None:
        raise TypeError("renumerate() only accepts start argument or end argument"
                        " - not both.")
    if start is None: start = len(sequence) - 1
    if end   is None: end   = 0
    n = start + end
    for elem in reversed(sequence):
        yield n, elem
        n -= 1

Installation

Prerequisites:

• Python 3.5 or higher

  • https://www.python.org/

  • 3.7 is a primary test environment.

• pip and setuptools

  • https://pypi.org/project/pip/

  • https://pypi.org/project/setuptools/

To install run:

python -m pip install --upgrade renumerate

Development

Prerequisites:

• Development is strictly based on tox. To install it run:

  python -m pip install --upgrade tox

Visit development page.

Installation from sources:

clone the sources:

git clone https://github.com/karpierz/renumerate.git renumerate

and run:

python -m pip install ./renumerate

or on development mode:

python -m pip install --editable ./renumerate

License

Copyright (c) 2016-2020 Adam Karpierz

Licensed under the zlib/libpng License

https://opensource.org/licenses/Zlib

Please refer to the accompanying LICENSE file.

Authors

• Adam Karpierz <[e-mail]>

Changelog

1.0.12 (2020-09-20)

• Add support for Python 3.9.

• Setup general update and cleanup.

1.0.10 (2019-11-12)

• Drop support for Python 3.4.

• Add support for Python 3.8.

• Setup update and cleanup.

1.0.9 (2019-05-22)

• Drop support for Python 2.

1.0.8 (2019-05-21)

• Update required setuptools version.

• Setup update and improvements.

• This is the latest release that supports Python 2.

1.0.7 (2018-11-08)

• Drop support for Python 2.6 and 3.0-3.3.

• Update required setuptools version.

1.0.6 (2018-05-08)

• Fix a bug in description.

• Update required setuptools version.

• Improve and simplify setup and packaging.

1.0.5 (2018-02-26)

• Improve and simplify setup and packaging.

1.0.4 (2018-01-28)

• Fix a bug and inconsistencies in tox.ini

• Update of README.rst.

1.0.1 (2018-01-24)

• Update required Sphinx version.

• Update doc Sphinx configuration files.

1.0.0 (2017-11-18)

• Setup improvements.

• Other minor improvements.

1.0.0b1 (2017-11-18)

• Minor improvements.

0.3.4 (2017-01-05)

• Minor setup improvements.

0.3.3 (2016-09-25)

• Fix bug in setup.py

0.3.1 (2016-09-25)

• More PEP8 compliant.

0.2.2 (2016-09-24)

• Description suplement

• Minor fixes.

0.1.1 (2016-09-24)

• First useful release.

0.0.2 (2016-09-23)

• Initial release.