pipreqs - Generate requirements.txt file for any project based on imports

Installation

pip install pipreqs

Usage

Usage:
    pipreqs [options] <path>

Options:
    --debug             Print debug information
    --savepath <file>   Save the list of requirements in the given file

Example

$ pipreqs /home/project/location
Looking for imports
Getting latest information about packages from PyPI
Found third-party imports: flask, requests, sqlalchemy, docopt
Successfully saved requirements file in /home/project/location/requirements.txt

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.