Installation

pip install pipreqs

Usage

Usage:
    pipreqs [options] <path>

Options:
    --use-local           Use ONLY local package info instead of querying PyPI
    --pypi-server <url>   Use custom PyPi server
    --proxy <url>         Use Proxy, parameter will be passed to requests library. You can also just set the
                          environments parameter in your terminal:
                          $ export HTTP_PROXY="http://10.10.1.10:3128"
                          $ export HTTPS_PROXY="https://10.10.1.10:1080"
    --debug               Print debug information
    --ignore <dirs>...    Ignore extra directories
    --encoding <charset>  Use encoding parameter for file open
    --savepath <file>     Save the list of requirements in the given file
    --print               Output the list of requirements in the standard output
    --force               Overwrite existing requirements.txt
    --diff <file>         Compare modules in requirements.txt to project imports.
    --clean <file>        Clean up requirements.txt by removing modules that are not imported in project.

Example

$ pipreqs /home/project/location
Successfully saved requirements file in /home/project/location/requirements.txt

Contents of requirements.txt

wheel==0.23.0
Yarg==0.1.9
docopt==0.6.2

Why not pip freeze?

pip freeze only saves the packages that are installed with pip install in your environment.
pip freeze saves all packages in the environment including those that you don't use in your current project. (if you don't have virtualenv)
and sometimes you just need to create requirements.txt for a new project without installing modules.

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