reduce import/load logging

[valentijnscholten]

Hi,

Can I suggest to adjust the logging of importing/loading extensions? When debugging issues, about 80% of my log files look like the below. Might it be sufficient to only log failed imports/loading of extensions?

uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.nl2br".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.nl2br.Nl2BrExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.sane_lists".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.sane_lists.SaneListExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.codehilite".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.codehilite.CodeHiliteExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.fenced_code".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.fenced_code.FencedCodeExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.toc".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.toc.TocExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.tables".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.tables.TableExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.nl2br".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.nl2br.Nl2BrExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.sane_lists".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.sane_lists.SaneListExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.codehilite".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.codehilite.CodeHiliteExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.fenced_code".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.fenced_code.FencedCodeExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.toc".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.toc.TocExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.tables".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.tables.TableExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.nl2br".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.nl2br.Nl2BrExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.sane_lists".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.sane_lists.SaneListExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.codehilite".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.codehilite.CodeHiliteExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.fenced_code".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.fenced_code.FencedCodeExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.toc".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.toc.TocExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.tables".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.tables.TableExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.nl2br".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.nl2br.Nl2BrExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.sane_lists".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.sane_lists.SaneListExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.codehilite".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.codehilite.CodeHiliteExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.fenced_code".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.fenced_code.FencedCodeExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.toc".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.toc.TocExtension".
uwsgi_1_820da895ad7a | Successfully imported extension module "markdown.extensions.tables".
uwsgi_1_820da895ad7a | Successfully loaded extension "markdown.extensions.tables.TableExtension".

[mlisovyi]

I would also love to have less verbose output

[thijstriemstra]

This can be disabled with:

import logging

logging.getLogger('MARKDOWN').setLevel(logging.WARNING)

[jbbqqf]

Hi! Triaging older issues — I think this one can be closed: the "Successfully imported / loaded extension" messages are already emitted at DEBUG level, not INFO. A library importer can silence them by configuring the MARKDOWN logger at INFO or higher (which is the default if you don't explicitly raise it to DEBUG).

Evidence:

• markdown/core.py L182-185: the "Successfully loaded extension" message uses logger.debug(...).
• markdown/core.py L226-228: the "Successfully imported extension module" message also uses logger.debug(...).
• This was changed from INFO to DEBUG back in PR #360 (merged 2014-10-24) precisely to suppress these messages by default.

Reproducer on markdown==3.10.2:

import logging
logging.basicConfig(level=logging.INFO, format="[%(levelname)s] %(name)s: %(message)s")
import markdown
md = markdown.Markdown(extensions=['nl2br', 'codehilite', 'fenced_code', 'toc', 'tables'])
print(md.convert("# hello"))
# Expected (current): no "Successfully ..." lines, just the <h1> output

If something in the OP's setup is overriding the MARKDOWN logger to DEBUG (e.g. uWSGI/Flask sometimes does this globally), the fix is logging.getLogger('MARKDOWN').setLevel(logging.INFO). Otherwise this looks shipped — would you mind closing?

---

Disclosure: I drafted this comment with help from Claude Code while triaging stale issues; the references above were verified manually against markdown==3.10.2 on Python 3.11.