pip fails to install packages from requirements.txt

Question

I am trying to install a python software using the requirements file.

>> cat requirements.txt
Cython==0.15.1
numpy==1.6.1
distribute==0.6.24
logilab-as         


        

Answer 1

I come across with a similar issue and I ended up with the below:

cat requirements.txt | sed -e '/^\s*#.*$/d' -e '/^\s*$/d' | xargs -n 1 python -m pip install

That will read line by line the requirements.txt and execute pip. I cannot find from where I got the answer properly, so apologies for that, but I found some justification below:

1. How sed works: https://howto.lintel.in/truncate-empty-lines-using-sed/
2. Another similar answer but with git: https://stackoverflow.com/a/46494462/7127519

Hope this help with alternatives.