django.git/django/utils/datastructures.py, branch main

Fixed #36410 -- Added support for Template Partials to the Django Template Language.

2025-08-15T00:53:14Z

Introduced `{% partialdef %}` and `{% partial %}` template tags to define and render reusable named fragments within a template file. Partials can also be accessed using the `template_name#partial_name` syntax via `get_template()`, `render()`, `{% include %}`, and other template-loading tools. Adjusted `get_template()` behavior to support partial resolution, with appropriate error handling for invalid names and edge cases. Introduced `PartialTemplate` to encapsulate partial rendering behavior. Includes tests and internal refactors to support partial context binding, exception reporting, and tag validation. Co-authored-by: Carlton Gibson Co-authored-by: Natalia <124304+nessita@users.noreply.github.com> Co-authored-by: Nick Pope

Refs #36500 -- Shortened some long docstrings and comments.

2025-07-23T23:17:55Z

Manually reformatted some long docstrings and comments that would be damaged by the to-be-applied autofixer script, in cases where editorial judgment seemed necessary for style or wording changes.

Refs #34233 -- Used str.removeprefix()/removesuffix().

2023-01-18T18:11:18Z

Fixed #33532 -- Optimized CaseInsensitiveMapping instantiation for dicts.

2022-02-23T19:15:22Z

Internal usages of this class (e.g. HttpHeaders) provide it with a dict, so testing for that type first avoids the cost of going through the potential __instancecheck__ + _abc_instancecheck to establish it's a Mapping. Co-authored-by: Nick Pope

Refs #33476 -- Reformatted code with Black.

2022-02-07T19:37:05Z

Optimized handling case-insensitive mappings.

2021-09-22T07:26:21Z

Elements yielded by _destruct_iterable_mapping_values are always unpacked. Since unpacking can be done with any iterable, there is no need to convert elements to tuples. Also, such elements can be used directly in for loops, creating a dictionary of them is excessive. Co-authored-by: Nick Pope

Fixed 32956 -- Lowercased spelling of "web" and "web framework" where appropriate.

2021-07-29T04:24:12Z

Refs #24121 -- Added repr() to OrderedSet.

2021-03-10T08:29:05Z

Fixed #32517 -- Made OrderedSet reversible.

2021-03-08T07:22:07Z

Refs #32516.

Updated MultiValueDict.update() to mirror dict.update() behavior.

2020-10-30T09:44:44Z

Changes in behavior include: - Accepting iteration over empty sequences, updating nothing. - Accepting iterable of 2-tuples providing key-value pairs. - Failing with the same or comparable exceptions for invalid input. Notably this replaces the previous attempt to catch TypeError which was unreachable as the call to .items() resulted in AttributeError on non-dict objects.