如何使用 virtualenv

from http://cs224d.stanford.edu/assignment1/index.html

cd assignment1sudo pip install virtualenv      # This may already be installed
virtualenv .env                  # Create a virtual environment
source .env/bin/activate         # Activate the virtual environment
pip install -r requirements.txt  # Install dependencies
# Work on the assignment for a while ...
deactivate                       # Exit the virtual environment

Install requirements (without a virtual environment): To install the required packages locally without setting up a virtual environment, run the following:

cd assignment1

pip install -r requirements.txt  # Install dependencies