Deprecation warning 'invalid escape sequence \s' raised in Python 3.10

[lyz-code]

Contribution guidelines

• I've read the contribution guidelines and wholeheartedly agree

I've found a bug and checked that ...

• ... the problem doesn't occur with the mkdocs or readthedocs themes
• ... the problem persists when all overrides are removed, i.e. custom_dir, extra_javascript and extra_css
• ... the documentation does not mention anything about my problem
• ... there are no open or closed issues that are related to my problem

Description

When building the site with the material theme jinja2 complains with a DeprecationWarning

Expected behaviour

No DeprecationWarning is raised

Actual behaviour

DeprecationWarning: invalid escape sequence '\s'

The above exception was the direct cause of the following exception:
../../.venvs/mkdocs-newsletter/lib/python3.9/site-packages/jinja2/lexer.py:652: in wrap
    self._normalize_newlines(value_str[1:-1])
E   DeprecationWarning: decoding with 'unicode-escape' codec failed (DeprecationWarning: invalid escape sequence '\s')

The above exception was the direct cause of the following exception:
tests/e2e/test_plugin.py:123: in test_plugin_creates_weekly_rss_feed
    build.build(config)  # act
../../.venvs/mkdocs-newsletter/lib/python3.9/site-packages/mkdocs/commands/build.py:306: in build
    _build_theme_template(template, env, files, config, nav)
../../.venvs/mkdocs-newsletter/lib/python3.9/site-packages/mkdocs/commands/build.py:111: in _build_theme_template
    output = _build_template(template_name, template, files, config, nav)
../../.venvs/mkdocs-newsletter/lib/python3.9/site-packages/mkdocs/commands/build.py:90: in _build_template
    output = template.render(context)
../../.venvs/mkdocs-newsletter/lib/python3.9/site-packages/jinja2/environment.py:1291: in render
    self.environment.handle_exception()
../../.venvs/mkdocs-newsletter/lib/python3.9/site-packages/jinja2/environment.py:925: in handle_exception
    raise rewrite_traceback_stack(source=source)
../../.venvs/mkdocs-newsletter/lib/python3.9/site-packages/material/404.html:4: in top-level template code
    {% extends "main.html" %}
../../.venvs/mkdocs-newsletter/lib/python3.9/site-packages/material/main.html:4: in top-level template code
    {% extends "base.html" %}
../../.venvs/mkdocs-newsletter/lib/python3.9/site-packages/material/base.html:4: in top-level template code
    {% import "partials/language.html" as lang with context %}
../../.venvs/mkdocs-newsletter/lib/python3.9/site-packages/jinja2/environment.py:1399: in make_module
    return TemplateModule(self, ctx)
../../.venvs/mkdocs-newsletter/lib/python3.9/site-packages/jinja2/environment.py:1529: in __init__
    body_stream = list(template.root_render_func(context))  # type: ignore
../../.venvs/mkdocs-newsletter/lib/python3.9/site-packages/material/partials/language.html:4: in top-level template code
    {% import "partials/languages/" ~ config.theme.language ~ ".html" as lang %}
../../.venvs/mkdocs-newsletter/lib/python3.9/site-packages/jinja2/environment.py:925: in handle_exception
    raise rewrite_traceback_stack(source=source)
../../.venvs/mkdocs-newsletter/lib/python3.9/site-packages/material/partials/languages/en.html:19: in template
    "search.config.separator": "[\s\-]+",
E   jinja2.exceptions.TemplateSyntaxError: invalid escape sequence '\s')

Steps to reproduce

1. Build the site programmatically with warnings set.

Package versions

• Python: Python 3.9.10
• MkDocs: mkdocs, version 1.2.3 from ../mkdocs-newsletter/lib/python3.9/site-packages/mkdocs (Python 3.9)
• Material: Version: 8.2.5

Configuration

---
site_name: The Blue Book
site_description: My second brain
site_author: Lyz
site_url: https://lyz-code.github.io/blue-book
site_dir: site
nav:
  - Introduction: index.md

plugins:
  - git-revision-date-localized:
      type: timeago
  - autolinks
  - section-index
  - mkdocs-newsletter

markdown_extensions:
  - toc:
      baselevel: 2
theme:
  name: material
  logo: img/logo.bmp

System information

• Operating system: Debian
• Browser: Irrelevant

[squidfunk]

Thanks for reporting. Funny. That's likely of the category "how did that ever work", because, yes, the backslash must be escaped to be preserved in the string to be a valid regular expression, but I'm amazed that this didn't occur before. Jinja seems to have done this implicitly because the configuration which is passed to the theme is correct:

Anyway, this should now be fixed in eab95da. I'm not sure if we also need to adjust the settings for mkdocs.yml, as MkDocs itself advertises that backslashes must not be escaped. My testing shows it's not necessary, but if it is, please open a new issue (or even better: PR the necessary changes).

[squidfunk]

Released as part of 8.2.6.

[lyz-code]

Thank you for the quick fix and maintaining the package :)

[QWERTAL124]

Hi everyone ! I have trouble with above errror , but my codes error not identity with this ! My code line following : subprocess.call('reg add HKCU\Software\Microsoft\CurrentVersion\Run /v Dadof_Virus /t REG_SZ/d"' + joylashuv + '"',shell=True)
Error :
SyntaxWarning: invalid escape sequence '\S'
subprocess.call('reg add HKCU\Software\Microsoft\CurrentVersion\Run /v Dadof_Virus /t REG_SZ/d"' + joylashuv + '"',shell=True)

How I fix this problem ? ( Thank for answers ! ! !)

[squidfunk]

This has nothing to do with Material for MkDocs. Please ask your question on a general forum like StackOverflow.

[QWERTAL124]

Thank you for answer bro ! Can I know how to fix tgis problem .Probably, I try in Python 3.10v Shan, 30-dek, 2023, 8:56 TK Martin Donath ***@***.***>:

…

This has nothing to do with Material for MkDocs. Please ask your question on a general forum like StackOverflow. — Reply to this email directly, view it on GitHub <#3695 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AULXWO42U4TIC26POA5GWV3YMA2SFAVCNFSM5QNUAII2U5DIOJSWCZC7NNSXTN2JONZXKZKDN5WW2ZLOOQ5TCOBXGI2TKMZVHE2A> . You are receiving this because you commented.Message ID: ***@***.***>

[Suvoo]

Hi everyone ! I have trouble with above errror , but my codes error not identity with this ! My code line following : subprocess.call('reg add HKCU\Software\Microsoft\CurrentVersion\Run /v Dadof_Virus /t REG_SZ/d"' + joylashuv + '"',shell=True) Error : SyntaxWarning: invalid escape sequence '\S' subprocess.call('reg add HKCU\Software\Microsoft\CurrentVersion\Run /v Dadof_Virus /t REG_SZ/d"' + joylashuv + '"',shell=True)

How I fix this problem ? ( Thank for answers ! ! !)

Use :

path = r'your/path'

instead of

path  = 'your/path'

[QWERTAL124]

Thank you very much ! вт, 11 июн. 2024 г. в 01:33, Suvodeep Sinha ***@***.***>:

…

Hi everyone ! I have trouble with above errror , but my codes error not identity with this ! My code line following : subprocess.call('reg add HKCU\Software\Microsoft\CurrentVersion\Run /v Dadof_Virus /t REG_SZ/d"' + joylashuv + '"',shell=True) Error : SyntaxWarning: invalid escape sequence '\S' subprocess.call('reg add HKCU\Software\Microsoft\CurrentVersion\Run /v Dadof_Virus /t REG_SZ/d"' + joylashuv + '"',shell=True) How I fix this problem ? ( Thank for answers ! ! !) Use : path = r'your/path' instead of path = 'your/path' — Reply to this email directly, view it on GitHub <#3695 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AULXWO56AE42AULRKSN34LLZGYEQRAVCNFSM6AAAAABJDADJ6CVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDCNJZGIZTENBXGY> . You are receiving this because you commented.Message ID: ***@***.***>