requirements.txt包不会在virtualenv中更新

Question

Need to install packages from requirements.txt to an virtualenv on amazon linux

requirement.txt contains:

pandas == 0.17.1
pymongo == 3.2.1

Already in the virtualenv, typed that command:

(venv_exporter)[ec2-user@ip-xxx-xxx-xxx-xxx core-exporter]$ pip install -r requirements.txt

Got that at the end of the command:

Installing collected packages: numpy, pandas, pymongo
  Running setup.py install for pandas ... done
  Running setup.py install for pymongo ... done
Successfully installed numpy pandas pymongo

Running that command give me that:

(venv_exporter)[ec2-user@ip-xxx-xxx-xxx-xxx core-exporter]$ pip freeze
python-dateutil==2.5.3
pytz==2016.4
six==1.10.0

Why I don't see my installed packages in the list?

And obviously my code is saying the packages (from the requirements.txt) are missing

Answer 1

I've run into the same issue with Python virtualenv on Amazon Linux.

Create a new virtual environment, update pip and then try to install your requirements.txt file.

$ pip -U pip
$ pip install -r requirements.txt