Project to create a virtual environment to avoid confusion with the time required for development projects and conflict bag original package, in a virtual environment, you can install the expansion pack, create a separate program for each virtual environment, can ensure the program can only access the virtual environment package. Installed in the system without affecting the global Python interpreter, to ensure cleanliness global interpreter.
virtualenv --version # check whether they have installed the tool to create a virtual environment
You can use the tool to install pip
pip install virtualenv
Recommended that you create an empty folder to store virtual environments.
virtualenv [OPTIONS] DEST_DIR # view the document and how to use
Creating no other extra package python environment
virtualenv --no-site-packages venv_py