Hi Arthur,

You should put cups module in your requirements.txt file, not pycups.

Put the below line, it should work

cups==0.0.6

Hello Arthur, 

You can use apt-get install libcups2-dev command in order to install pycups library

There is an another way too; using GIT you can install library

git clone https://github.com/OpenPrinting/pycups.git -b python3

cd pycups

python3 setup.py install

Thanks

Anisha Bahukhandi

Technical Content Writer

Try pip install --user pycups

try install python-pip

use:

sudo apt install python-pip

don't forget install 

sudo apt-get install cups
sudo apt-get install libcups2-dev
sudo apt-get install python3-dev

After do the above steps try install pycups.

use:

sudo pip install pycups

it will be work.