Environment variable definition with type.
pip install getenvSee example.py:
fromgetenvimportEnvapp_name='FOO'# Set the prefix for env varsEnv.set_prefix(app_name) # Define your envsENV_PROCESSES=Env('{prefix}_PROCESSES', type=int, default=1) ENV_DEBUG=Env('{prefix}_DEBUG', type=bool, default=False) ENV_OPERATOR=Env('{prefix}_OPERATOR', default=None) defmain(): processes=ENV_PROCESSES.get() debug=ENV_DEBUG.get() operator=ENV_OPERATOR.get() print('Run{} processes, debug ={}, operator ={}'.format(processes, debug, operator))Run example.py normally:
$ FOO_PROCESSES=3 python example.py Run 3 processes, debug = False, operator = NoneThen with envs:
$ FOO_PROCESSES=3 FOO_DEBUG=true FOO_OPERATOR=$(whoami) python example.py Run 3 processes, debug = True, operator = reorx