{"id":922,"library":"pipenv","title":"Pipenv","description":"Pipenv is a Python development workflow tool that combines package management and virtual environment management into a single interface. It aims to simplify the process of installing, uninstalling, tracking, and documenting dependencies while automatically creating and managing project-specific virtual environments. Pipenv utilizes `Pipfile` to declare abstract dependencies and `Pipfile.lock` for deterministic builds, ensuring reproducible environments across different systems. It is actively maintained and currently at version 2026.4.0, with a regular release cadence.","status":"active","version":"2026.4.0","language":"python","source_language":"en","source_url":"https://github.com/pypa/pipenv","tags":["dependency management","virtual environments","packaging","development workflow","cli"],"install":[{"cmd":"pip install --user pipenv","lang":"bash","label":"Recommended user installation"},{"cmd":"pip install pipenv","lang":"bash","label":"Global installation (may require sudo)"}],"dependencies":[],"imports":[],"quickstart":{"code":"mkdir my_project\ncd my_project\npipenv install requests\npipenv shell\n# Now in the virtual environment\npython -c \"import requests; print(requests.__version__)\"\nexit\n# Out of the virtual environment","lang":"bash","description":"This quickstart demonstrates how to create a new project directory, install a package (e.g., `requests`), automatically creating a virtual environment and `Pipfile`/`Pipfile.lock` if they don't exist, activate the project's virtual environment, run a Python command within it, and then exit the shell."},"warnings":[{"fix":"To install packages without updating the entire lock file, consider `pipenv install --skip-lock` (though this should be used cautiously as it bypasses lockfile generation). For deployment, use `pipenv install --deploy` or `pipenv sync` to install exactly what's in `Pipfile.lock` without changes. Regularly run `pipenv lock` (or `pipenv install` without arguments) and review changes, committing `Pipfile.lock` to version control.","message":"Installing a new package with `pipenv install <package>` or running `pipenv update` can update *all* dependencies in `Pipfile.lock` to their latest compatible versions, potentially introducing unintended breaking changes to existing dependencies.","severity":"gotcha","affected_versions":"All versions"},{"fix":"To allow pre-release packages, use the `--pre` flag with `pipenv install` (e.g., `pipenv install --pre some-package`) or add `allow_prereleases = true` under the `[pipenv]` section in your `Pipfile`.","message":"Pipenv does not install pre-release versions (e.g., `1.0b1`, `2.0rc1`) by default, even if they satisfy version constraints.","severity":"gotcha","affected_versions":"All versions"},{"fix":"You need to add the user's base binary directory to your system's PATH. On Linux/macOS, find the path with `python -m site --user-base` and append `/bin` to it (e.g., `export PATH=\"$HOME/.local/bin:$PATH\"` in your `~/.bashrc` or `~/.zshrc`). On Windows, add the `Scripts` directory (e.g., `C:\\Users\\Username\\AppData\\Roaming\\Python\\Python39\\Scripts`) to your PATH environment variable. Remember to restart your terminal or `source` your shell configuration file.","message":"After installing Pipenv using `pip install --user pipenv`, the `pipenv` command might not be immediately available in your shell due to your user's binary directory not being in the system's PATH.","severity":"gotcha","affected_versions":"All versions"},{"fix":"Try clearing the resolver cache with `pipenv lock --clear`. If problems persist, inspect your dependency graph using `pipenv graph` to identify conflicting packages, then adjust version constraints in your `Pipfile`. Ensure your `Pipfile` does not contain typos for package names.","message":"Pipenv can encounter dependency resolution issues, especially with complex graphs or conflicting version requirements, sometimes manifesting as 'Your dependencies could not be resolved'.","severity":"gotcha","affected_versions":"All versions"}],"env_vars":null,"search_vec":"'2026.4.0':70 'abstract':49 'across':59 'activ':64 'aim':22 'automat':35 'build':55 'cadenc':75 'cli':83 'combin':10 'creat':36 'current':67 'declar':48 'depend':33,50,76 'determinist':54 'develop':6,81 'differ':60 'document':32 'ensur':56 'environ':15,43,58,79 'instal':28 'interfac':20 'maintain':65 'manag':12,16,38,77 'packag':11,80 'pipenv':1,2,44 'pipfil':46 'pipfile.lock':52 'process':26 'project':40 'project-specif':39 'python':5 'regular':73 'releas':74 'reproduc':57 'simplifi':24 'singl':19 'specif':41 'system':61 'tool':8 'track':30 'uninstal':29 'util':45 'version':69 'virtual':14,42,78 'workflow':7,82","created_at":"2026-03-29T06:07:49.924679+00:00","updated_at":"2026-04-16T18:02:38.067190+00:00","problems":[{"fix":"Ensure Pipenv is installed globally (e.g., `pip install pipenv` or `pipx install pipenv`) and that the directory where its executable resides (often `~/.local/bin` on Linux/macOS or Python's `Scripts` directory on Windows) is added to your system's PATH. Restart your terminal after modifying PATH.","cause":"The directory containing the pipenv executable is not included in your system's PATH environment variable, or Pipenv was not installed correctly.","error":"pipenv: command not found"},{"fix":"Run Pipenv by explicitly invoking it as a Python module (e.g., `python -m pipenv shell` or `python3 -m pipenv install`). If the issue persists, reinstall Pipenv for your desired Python version (e.g., `python3 -m pip install pipenv --force-reinstall`).","cause":"Pipenv was installed for a different Python interpreter than the one currently active in your shell, or there's a conflict between multiple Python or Pipenv installations.","error":"ModuleNotFoundError: No module named 'pipenv'"},{"fix":"Try removing any existing virtual environment for the project with `pipenv --rm`, then retry `pipenv install`. Ensure you have write permissions in your project directory or the default virtual environment location. You may also explicitly specify a Python version using `pipenv --python 3.x`.","cause":"This error often occurs due to issues with the underlying Python installation, insufficient file permissions in the virtual environment creation directory, or conflicts with other virtual environment tools.","error":"Failed creating virtual environment [pipenv.exceptions.VirtualenvCreationException]: Failed to create virtual environment."},{"fix":"Carefully review your Pipfile for typos and incompatible version specifiers. Try clearing the resolver cache with `pipenv lock --clear`. If you intend to install pre-release packages, use `pipenv install --pre` or set `allow_prereleases = true` in your Pipfile's `[pipenv]` section.","cause":"This typically indicates conflicting dependency requirements within your Pipfile or its transitive dependencies, a typo in a package name, or the specified package (or a version of it) is not available on PyPI or configured sources. Pre-release packages might also be a cause if not explicitly allowed.","error":"Locking Failed! (or 'Your dependencies could not be resolved' followed by 'No matching distribution found')"}],"ecosystem":"pypi","meta_description":null,"install_score":null,"quickstart_score":null,"quickstart_tag":null,"pypi_latest":null,"cli_name":"pipenv","cli_version":"sh: 1: pipenv: not found","type":"library","homepage":"https://pipenv.pypa.io","github":"https://github.com/pypa/pipenv","docs":"https://pipenv.pypa.io/en/latest/","changelog":null,"pypi":"https://pypi.org/project/pipenv/","npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"categories":["devops"],"base_url":null,"auth_type":null,"provenance":{"verified_status":null,"verified_at":null,"last_verified":"2026-03-29","next_check":"2026-06-27","install_tag":null}}