zipvar

The awkward middle child between zip and zip_longest. Not short. Not long. Just right.

>>> from zipvar import zip_var
>>> a = (1, 2, 3)
>>> b = [4, 5, 6, 7, 8]
>>> c = set([9])
>>> for x in zip_var(a, b, c):
...     print(x)
...
(1, 4, 9)
(2, 5)
(3, 6)
(7,)
(8,)
>>>

Installation

pip install git+https://github.com/goessl/zipvar.git

Usage

One module zipvar with a single class zipvar.

• zip_var(*iterators): Return a zip_var object whose .__next__() method returns tuples containing one element from each of the given iterables. The order of elements in each tuple always matches the order of the input iterables. Iteration continues until all iterables are exhausted, then a StopIteration is raised. Once an iterable is exhausted, it is excluded from the resulting tuples - they become shorter over time.

Implementation

Implemented in C, forked from Pythons itertools.zip_longest. Pure Python fallback.

Todo

• as C extension

References

• Deferred more-itertools suggestion with great benchmarks and alternative implementations by pochmann3.
• Stack Overflow question for zipvar.

License (MIT)

Copyright (c) 2025 Sebastian Gössl

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.