The simple deployer to replace your hand.
Unix:
$ ./venv.sh
$ . ./VENV/bin/activate
(VENV) $ pip install -r requirements.txt
Windows CMD:
C:\> venv.cmd
C:\> .\VENV\Scripts\activate.bat
(VENV) C:\> pip install -r requirements.txt
Unix:
$ ./build.sh
Windows CMD:
C:\> build.cmd