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A case-insensitive list for Python

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Class NocaseList is a case-insensitive list that preserves the lexical case of its items.


$ python
>>> from nocaselist import NocaseList

>>> list1 = NocaseList(['Alpha', 'Beta'])

>>> print(list1)  # Any access is case-preserving
['Alpha', 'Beta']

>>> 'ALPHA' in list1  # Any lookup or comparison is case-insensitive

The NocaseList class supports the functionality of the built-in list class of Python 3.8 on all Python versions it supports (except for being case-insensitive, of course).

The case-insensitivity is achieved by matching any key values as their casefolded values. By default, the casefolding is performed with str.casefold() for unicode string keys and with bytes.lower() for byte string keys. The default casefolding can be overridden with a user-defined casefold method.


To install the latest released version of the nocaselist package into your active Python environment:

$ pip install nocaselist

The nocaselist package has no prerequisite Python packages.

For more details and alternative ways to install, see Installation.


Change History


For information on how to contribute to the nocaselist project, see Contributing.


The nocaselist project is provided under the Apache Software License 2.0.

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