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Code Issues Projects Releases Packages Wiki Activity Actions 7

gh-129939: Add darkmode support for difflib's comparison pages (#129940)

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Wulian233 2025-02-11 16:58:57 +08:00 • committed by GitHub
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4 changed files with 30 additions and 3 deletions
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7
Doc/whatsnew/3.14.rst
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@ -411,6 +411,13 @@ decimal
:meth:`Decimal.from_number() <decimal.Decimal.from_number>`. :meth:`Decimal.from_number() <decimal.Decimal.from_number>`.
(Contributed by Serhiy Storchaka in :gh:`121798`.) (Contributed by Serhiy Storchaka in :gh:`121798`.)
difflib
-------
* Comparison pages with highlighted changes generated by the
:class:`difflib.HtmlDiff` class now support dark mode.
(Contributed by Jiahao Li in :gh:`129939`.)
dis dis
--- ---

13
Lib/difflib.py
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@ -1632,13 +1632,22 @@ _file_template = """
</html>""" </html>"""
_styles = """ _styles = """
:root {color-scheme: light dark}
table.diff {font-family:Courier; border:medium;} table.diff {font-family:Courier; border:medium;}
.diff_header {background-color:#e0e0e0} .diff_header {background-color:#e0e0e0}
td.diff_header {text-align:right} td.diff_header {text-align:right}
.diff_next {background-color:#c0c0c0} .diff_next {background-color:#c0c0c0}
.diff_add {background-color:#aaffaa} .diff_add {background-color:palegreen}
.diff_chg {background-color:#ffff77} .diff_chg {background-color:#ffff77}
.diff_sub {background-color:#ffaaaa}""" .diff_sub {background-color:#ffaaaa}
@media (prefers-color-scheme: dark) {
.diff_header {background-color:#666}
.diff_next {background-color:#393939}
.diff_add {background-color:darkgreen}
.diff_chg {background-color:#847415}
.diff_sub {background-color:darkred}
}"""
_table_template = """ _table_template = """
<table class="diff" id="difflib_chg_%(prefix)s_top" <table class="diff" id="difflib_chg_%(prefix)s_top"

11
Lib/test/test_difflib_expect.html
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@ -9,13 +9,22 @@
content="text/html; charset=utf-8" /> content="text/html; charset=utf-8" />
<title></title> <title></title>
<style type="text/css"> <style type="text/css">
:root {color-scheme: light dark}
table.diff {font-family:Courier; border:medium;} table.diff {font-family:Courier; border:medium;}
.diff_header {background-color:#e0e0e0} .diff_header {background-color:#e0e0e0}
td.diff_header {text-align:right} td.diff_header {text-align:right}
.diff_next {background-color:#c0c0c0} .diff_next {background-color:#c0c0c0}
.diff_add {background-color:#aaffaa} .diff_add {background-color:palegreen}
.diff_chg {background-color:#ffff77} .diff_chg {background-color:#ffff77}
.diff_sub {background-color:#ffaaaa} .diff_sub {background-color:#ffaaaa}
@media (prefers-color-scheme: dark) {
.diff_header {background-color:#666}
.diff_next {background-color:#393939}
.diff_add {background-color:darkgreen}
.diff_chg {background-color:#847415}
.diff_sub {background-color:darkred}
}
</style> </style>
</head> </head>

2
Misc/NEWS.d/next/Library/2025-02-10-14-34-34.gh-issue-129939.B08L4e.rst Normal file
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@ -0,0 +1,2 @@
Comparison pages with highlighted changes generated by the
:class:`difflib.HtmlDiff` class now support dark mode.