Name already in use

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>

Add Python implementations of certain longobject.c functions. These use
asymptotically faster algorithms that can be used for operations on
integers with many digits. In those cases, the performance overhead of
the Python implementation is not significant since the asymptotic
behavior is what dominates runtime. Functions provided by this module
should be considered private and not part of any public API.

Co-author: Tim Peters <tim.peters@gmail.com>
Co-author: Mark Dickinson <dickinsm@gmail.com>
Co-author: Bjorn Martinsson

Co-authored-by: C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM>

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>

)

Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
Co-authored-by: Brandt Bucher <brandtbucher@gmail.com>

)

…ple example (#98605)

Co-authored-by: Guido van Rossum <gvanrossum@gmail.com>

…98650)

Co-authored-by: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>

…98631)

* Add two line breaks and ref target labels to remaining subsections

* Fix a few out of order Improved Modules

* Fix a few minor textual formatting issues in sections

* Fix remaining Sphinx warnings in the Improved Modules section

…ompiler_jump_if no longer needs a pointer to the loc. (GH-98494)

… subscripting" (#98508)

)

…98604)

Followup from #98312.

Co-authored-by: T <tnie@tuta.io>