Update Python framework docs

[marandaneto]

Changes

follow up #16888

• Update Django and Flask Python SDK docs to mention error tracking support and Python 7.x version requirements.
• Refresh Django setup examples to use the global posthog client configured from AppConfig, with context identification guarded by request.user.is_authenticated.
• Document Django context middleware behavior for authenticated users, request metadata, sanitized tracing headers, exception capture, and sync/async support.
• Add a Flask request context example for sharing identity, session IDs, and request tags across captures.
• Fix Flask snippets so examples define app = Flask(__name__).

Checklist

• I've read the docs and/or content style guides.
• Words are spelled using American English
• Use relative URLs for internal links
• I've checked the pages added or changed in the Vercel preview build
• If I moved a page, I added a redirect in vercel.json

[github-actions]

Deploy preview

Status	Details	Updated (UTC)
🟢 Ready	View preview	May 20, 2026 02:27PM

[github-actions]

Vale prose linter → found 3 errors, 14 warnings, 1 suggestions in your markdown

Full report → Copy the linter results into an LLM to batch-fix issues.

Linter being weird? Update the rules!

contents/docs/libraries/django.mdx — 1 errors, 6 warnings, 0 suggestions

Line	Severity	Message	Rule
8:18	warning	Avoid trivializing words. 'easy to' can sound dismissive to the reader.	PostHogDocs.Trivializers
8:141	warning	Capitalize 'Feature Flags' for PostHog's product. Use 'feature flags' for the general industry concept.	PostHogBase.ProductNames
8:156	warning	Capitalize 'Error Tracking' for PostHog's product. Use 'error tracking' for the general industry concept.	PostHogBase.ProductNames
16:55	error	Use straight quotes and apostrophes, not curly ones.	PostHogDocs.CurlyQuotes
23:6	warning	Use 'Django' instead of 'django'.	Vale.Terms
77:108	warning	Capitalize 'Feature Flags' for PostHog's product. Use 'feature flags' for the general industry concept.	PostHogBase.ProductNames
81:33	warning	Capitalize 'Feature Flags' for PostHog's product. Use 'feature flags' for the general industry concept.	PostHogBase.ProductNames

contents/docs/libraries/flask.mdx — 2 errors, 7 warnings, 0 suggestions

Line	Severity	Message	Rule
6:18	warning	Avoid trivializing words. 'easy to' can sound dismissive to the reader.	PostHogDocs.Trivializers
6:140	warning	Capitalize 'Feature Flags' for PostHog's product. Use 'feature flags' for the general industry concept.	PostHogBase.ProductNames
6:155	warning	Capitalize 'Error Tracking' for PostHog's product. Use 'error tracking' for the general industry concept.	PostHogBase.ProductNames
12:55	error	Use straight quotes and apostrophes, not curly ones.	PostHogDocs.CurlyQuotes
76:4	warning	'Error tracking' heading should be in sentence case, and product names should be capitalized.	PostHogBase.SentenceCase
76:4	warning	Capitalize 'Error Tracking' for PostHog's product. Use 'Error tracking' for the general industry concept.	PostHogBase.ProductNames
80:54	error	Use straight quotes and apostrophes, not curly ones.	PostHogDocs.CurlyQuotes
86:107	warning	Capitalize 'Feature Flags' for PostHog's product. Use 'feature flags' for the general industry concept.	PostHogBase.ProductNames
91:18	warning	Capitalize 'Feature Flags' for PostHog's product. Use 'feature flags' for the general industry concept.	PostHogBase.ProductNames

contents/docs/libraries/python/_snippets/django-context-middleware.mdx — 0 errors, 1 warnings, 1 suggestions

Line	Severity	Message	Rule
5:252	suggestion	Address the reader directly. Use 'you' instead of 'the user'.	PostHogDocs.DirectAddress
42:76	warning	Capitalize 'Error Tracking' for PostHog's product. Use 'error tracking' for the general industry concept.	PostHogBase.ProductNames