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/