bashANYrequirementsinstallpip
bash
python -m pip install -r requirements.txtStandard setup command for many Python apps.
Python venv + pip Cheat Sheet
Package installation, requirements, editable installs, wheel workflows, and dependency troubleshooting inside Python virtual environments.
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Requirements and lock-style workflows
Install and snapshot dependencies consistently.
bashANYrequirementsdevelopmentpip
bash
python -m pip install -r requirements-dev.txtCommon when separating runtime and developer tooling.
bashANYfreezerequirementssnapshot
bash
python -m pip freeze > requirements.txtCaptures exact package versions in pip format.
bashANYfreezediffrequirements
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diff -u requirements.txt <(python -m pip freeze)Useful on bash/zsh to see dependency drift quickly.
bashANYinstallno-depspip
bash
python -m pip install --no-deps mypackageUseful in controlled builds or when debugging dependency issues.
bashANYrequirementshashessecurity
bash
python -m pip install --require-hashes -r requirements.txtStricter installs for reproducibility and integrity checks.
Editable and local installs
Develop libraries and applications locally within a venv.
bashANYeditablelocalpip
bash
python -m pip install -e .Common for local development so changes are reflected without reinstalling.
bashANYeditableextrasdevelopment
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python -m pip install -e ".[dev]"Convenient when your project defines optional development dependencies.
bashANYwheelinstallartifact
bash
python -m pip install dist/my_package-0.1.0-py3-none-any.whlUseful for testing built artifacts in a clean environment.
bashANYsdistinstallartifact
bash
python -m pip install dist/my_package-0.1.0.tar.gzUseful when validating source distribution packaging.
Wheelhouse and offline patterns
Prepare or reuse package artifacts without live internet installs.
bashANYwheelrequirementsoffline
bash
python -m pip wheel -r requirements.txt -w ./wheelhouseBuilds or downloads wheel files into a local directory for faster later installs.
bashANYwheelhouseofflineinstall
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python -m pip install --no-index --find-links=./wheelhouse -r requirements.txtUseful for offline environments or repeatable deployments.
bashANYcachepipinspect
bash
python -m pip cache dirGood starting point when troubleshooting repeated downloads or cache bloat.
bashANYcachepurgepip
bash
python -m pip cache purgeUseful when stale cache state may be causing confusion.
Dependency debugging
Figure out why an environment behaves differently than expected.
bashANYpipshowlocation
bash
python -m pip show urllib3Use this to confirm whether a package is installed in the active venv versus a base interpreter.
bashANYpipoutdatedupgrade
bash
python -m pip list --outdatedUseful when planning upgrades or security remediation.
bashANYpipdebugdiagnostics
bash
python -m pip debugHelpful when debugging platform tags, config, or install behavior.
bashANYsys.pathimportsdebugging
bash
python -c "import sys; print('
'.join(sys.path))"Useful when imports succeed or fail unexpectedly due to path order.
bashANYimportsversiondebugging
bash
python -c "import requests; print(requests.__version__)"Confirms which version is actually importable in the active venv.
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