Automatically create requirements.txt

Question

Sometimes I download the python source code from github and don\'t know how to install all the dependencies. If there is no requirements.txt file I

Answer 1

Make sure to run pip3 for python3.7.

pip3 freeze >> yourfile.txt

Before executing the above command make sure you have created a virtual environment.

python3:

pip3 install virtualenv
python3 -m venv <myenvname> 

python2:

pip install virtualenv
virtualenv <myenvname>

After that put your source code in the directory. If you run the python file now, probably It won't launch If you are using non-native modules. You can install those modules runing

pip3 install <module> or pip install <module> 

This will not affect you entire module list except the environment you are In.

Now you can execute the command at the top and now you have a requirements file which contains only the modules you installed in the virtual environment. Now you can run the command at the top.

I advise everyone to use environments as It makes things easier when It comes to stuff like this.

Hope this helped.