Things learnt about Python
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How to get Gunicorn to log as JSON
on
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How to create a word cloud from text piped via STDIN
on
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Not to union Python list types
on
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How to handle convenience imports with Mypy
on
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How Django’s
override_settings decorator causes flakey tests
on
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Mypy skips empty functions
on
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It’s better to explicitly chain Python exceptions
on
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About indirect parametrization with Pytest
on
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That Python’s
datetime package doesn’t support ordinal suffixes for the day of the month
on
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How to inspect and clear Python’s
functools.lru_cache
on
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About Factory Boy’s
SelfAttribute class
on
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You can’t use Django’s generic foreign key field with objects stored in a separate database
on
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About Django’s
setup method for generic view classes
on
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How to use
aws-mfa-v2 to avoid entering so many MFA tokens
on
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About a gotcha with
psycopg2’s autocommit handling
on
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Python’s
envparse library has counter-intuitive boolean casting
on
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Factory boy can be used to build dicts
on
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Django settings prefixed with an underscore are private
on
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Django doesn’t flush caches between tests
on
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How Django’s management commands need to be type hinted
on
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File-level flake8 comments ignore all errors
on
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That Pytest’s “keyword expression” filtering supports Python conditionals
on
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That FreezeGun doesn’t work with Pytest fixtures (unless you use
pytest-freezegun)
on
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About
mypy’s unreachable code functionality
on
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About
mypy’s reveal_type and reveal_locals functions
on
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That
mypy only type-checks functions that have at least one type annotation
on
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Python’s
csv.writer function defaults to Windows line endings
on
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You can have class-scoped autouse pytest fixtures
on
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pdbpp has a useful ‘sticky’ mode
on
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To prefer
dateutil over pytz
on
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Pytest doesn’t play nicely with ipdb
on
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You can arbitrarily chain Python comparison operations
on
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You can stack
pytest’s parametrize decorators
on
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You can label parameterized fixtures with pytest
on
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A better way of configuring
mypy
on
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datetime.datetime is a subclass of datetime.date
on
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About
pip-licenses
on
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Python 3.7 supports postponed evaluation of annotations
on
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How to use type annotations with Python’s
csv module
on
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