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GH-116380: Speed up glob.[i]glob() by making fewer system calls (take 2) #137474

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GH-116380: Speed up glob.[i]glob() by making fewer system calls (take 2) #137474

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GH-116380: Speed up `glob.[i]glob()` by making fewer system calls (ta…
barneygale Aug 6, 2025
7cc555f
Fix version number
barneygale Aug 6, 2025
51515ce
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barneygale Aug 6, 2025
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barneygale Aug 6, 2025
a116d94
Errant tabs
barneygale Aug 6, 2025
e2bb3cb
Make Globber arguments keyword-only
barneygale Aug 7, 2025
c093c4e
Tweak Globber argument defaults
barneygale Aug 7, 2025
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18 changes: 10 additions & 8 deletions Doc/library/glob.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -75,10 +75,6 @@ The :mod:`glob` module defines the following functions:
Using the "``**``" pattern in large directory trees may consume
an inordinate amount of time.

.. note::
This function may return duplicate path names if *pathname*
contains multiple "``**``" patterns and *recursive* is true.

.. versionchanged:: 3.5
Support for recursive globs using "``**``".

Expand All @@ -88,6 +84,11 @@ The :mod:`glob` module defines the following functions:
.. versionchanged:: 3.11
Added the *include_hidden* parameter.

.. versionchanged:: 3.15
Matching path names are returned only once. In previous versions, this
function may return duplicate path names if *pathname* contains multiple
"``**``" patterns and *recursive* is true.


.. function:: iglob(pathname, *, root_dir=None, dir_fd=None, recursive=False, \
include_hidden=False)
Expand All @@ -98,10 +99,6 @@ The :mod:`glob` module defines the following functions:
.. audit-event:: glob.glob pathname,recursive glob.iglob
.. audit-event:: glob.glob/2 pathname,recursive,root_dir,dir_fd glob.iglob

.. note::
This function may return duplicate path names if *pathname*
contains multiple "``**``" patterns and *recursive* is true.

.. versionchanged:: 3.5
Support for recursive globs using "``**``".

Expand All @@ -111,6 +108,11 @@ The :mod:`glob` module defines the following functions:
.. versionchanged:: 3.11
Added the *include_hidden* parameter.

.. versionchanged:: 3.15
Matching path names are yielded only once. In previous versions, this
function may yield duplicate path names if *pathname* contains multiple
"``**``" patterns and *recursive* is true.


.. function:: escape(pathname)

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8 changes: 8 additions & 0 deletions Doc/whatsnew/3.15.rst
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Expand Up @@ -234,6 +234,14 @@ difflib
(Contributed by Jiahao Li in :gh:`134580`.)


glob
----

* Reduce the number of system calls in :func:`glob.glob` and :func:`~glob.iglob`,
thereby improving the speed of globbing operations by 20-80%.
(Contributed by Barney Gale in :gh:`116380`.)


hashlib
-------

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