Q: construct a json file
a = dict
b = {test:a, cc:dd}
Q:virtualenv创建后没有pip
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python get-pip.py
python3 -m pip
python click study
https://realpython.com/comparing-python-command-line-parsing-libraries-argparse-docopt-click/