Further information#

What formats can be used to write a docstring?#

The format used to write a docstring described in How to write a docstring is the one specified by the Numpy project. You can read about that specification here: https://numpydoc.readthedocs.io/en/latest/format.html#docstring-standard

Amongst other things you can see how to specify further functionality:

  • How to indicate if a parameter is optional.

  • How to specify what types of errors might be raised by a function.

  • How to specify when a function is a generator.

There are 2 other common specifications:

  • Google’s Python Style Guide: https://google.github.io/styleguide/pyguide.html#38-comments-and-docstrings

  • Sphinx Python Style Guide: https://pythonhosted.org/an_example_pypi_project/sphinx.html#function-definitions

Are there tools available to assist with writing docstrings?#

The darglint library: https://github.com/terrencepreilly/darglint can be used to check if docstrings match a given format.

A part from removing duplicates and set operations what are they advantages to using set?#

One valuable uses of set is to efficiently identify is an element is in a given iterable or not:

numbers = list(range(100000))
%timeit 100000 in numbers

727 µs ± 565 ns per loop (mean ± std. dev. of 7 runs, 1,000 loops each)

numbers = set(range(100000))
%timeit 100000 in numbers

24.3 ns ± 0.16 ns per loop (mean ± std. dev. of 7 runs, 10,000,000 loops each)