According Blog: https://hackernoon.com/learn-blockchains-by-building-one-117428612f46

1. check if python installed

• Windows 10: open CMD >

python -V

*not installed > [Download Windows x86-64 executable installer] 0

Pitfalls

Dependency in Flask

Source

pip install --upgrade Flask

resolves > AttributeError: 'Request' object has no attribute 'is_xhr'

---

NoneType is not iterable when checking Post-Body Parameters

Source

    def new_transaction():
        values = request.get_json(force=True)

instead of

    def new_transaction():
        values = request.get_json()

Miscellaneous

For Debugging a Flask App set an environment variable (using CMD)
Source

set FLASK_ENV=development