How-to guides

Task-shaped recipes. Each one is a complete program you can paste into a file and run, with the reasoning kept to what the code does not say for itself.

• Scope a web request
• Accumulate an audit trail
• Fan out with asyncio
• Run work in threads
• Test injected code
• Refer to a key you cannot import
• Find out why the context is missing
• See the context in a traceback
• Add the context to every log record
• Replace a hand-rolled ContextVar

See also

The topic guides cover the same features systematically, one page per concept.