Could not find a version that satisfies the requirement

Question

I\'m installing several Python packages in Ubuntu 12.04 using the following requirements.txt file:

numpy>=1.8.2,<2.0.0
matplotlib>=1.3.         


        

Answer 1

Although it doesn't really answers this specific question. Others got the same error message with this mistake.

For those who like me initial forgot the -r: Use pip install -r requirements.txt the -r is essential for the command.

The original answer:

https://stackoverflow.com/a/42876654/10093070