Sorting a list of dot-separated numbers, like software versions

by

You can also use distutils.version module of standard library:

from distutils.version import StrictVersion
versions = ["1.1.2", "1.0.0", "1.3.3", "1.0.12", "1.0.2"]
versions.sort(key=StrictVersion)

Gives you:

['1.0.0', '1.0.2', '1.0.12', '1.1.2', '1.3.3']

It can also handle versions with pre-release tags, for example:

versions = ["1.1", "1.1b1", "1.1a1"]
versions.sort(key=StrictVersion)

Gives you:

["1.1a1", "1.1b1", "1.1"]

Documentation: https://github.com/python/cpython/blob/3.2/Lib/distutils/version.py#L101

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