Running Python Scripts in Command Line

Question

I am trying to run a script I wrote and I hope to distribute. Each time I run outside of an activated virtual environment "No module named", I guess it is because it has some dependencies that are not in-built. How do I overcome this issue ?

The script works. The error message it shows on the command line occurs when a virtual environment is not activated, the error "no module ..... found". I can install all the dependencies to my python library and it works but I plan to distribute this script that will be inconvenient for whoever uses it. — code.vem
– code.vem, Commented Sep 28, 2022 at 10:16
If, by "distribute", you mean the eventual user will run something like pip install your_cool_script, then the distribution package will ensure that the necessary modules are installed at that time. — chepner
– chepner, Commented Sep 28, 2022 at 13:32

Dinky Arora · Accepted Answer · 2022-09-28 12:29:32Z

2

You need to install that modules outside the virtual environment that is directly in the system.

And If you want to distribute your script then add all of your required modules in requirements.txt file and provide this file to another user along your script and then just run this command to install the modules:-

pip install -r requirements.txt

OR

python3 -m pip install -r requirements.txt

answered Sep 28, 2022 at 12:29

Dinky Arora

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MoroccanTea · Accepted Answer · 2022-09-28 14:35:25Z

1

You need to create a requirements file, those who want to use your project can run the command provided by Dinky Arora to get the required packages.

I recommend downloading pipreqs which helps your generate requirement files by running the following command :

pip install pipreqs

Then run :

pipreqs /path/to/project

To generate a requirements file.

Note : You can also use freeze, it does the same job. Moreover, you could generate a setup.py to install your python project + all its dependencies.

answered Sep 28, 2022 at 14:35

MoroccanTea

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1 Comment

code.vem Over a year ago

I am aware of this method. I was juts wondering if there was a way when they run the script and the script detects missing packages and installs them first before going on.

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