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Python

Posted by Kurt Moseley
Kurt Moseley
19,309 Points

Issue with bcrypt in python social app

When trying to register a user I would get ValueError message 'User already Exists.'. But the user doesn't exist. When I removed try/except from:

@classmethod
    def create_user(cls, username, email, password, admin=False):
        cls.create(
            username=username,
            email=email,
            password=generate_password_hash(password),
            is_admin=admin)

I get this error:

TypeError: hashpw() argument 1 must be str, not bytes

I'm using PyCharm.

2 Answers

Nathan Tallack
Nathan Tallack
22,164 Points
Nathan Tallack
Nathan Tallack
22,164 Points

You might have wrong bcrypt being used. Perhaps py-bcrypt is installed and pip did not try to fetch the regular bcrypt for you when you installed flask.

Try this in your shell.

pip uninstall flask-bcrypt
pip uninstall bcrypt
pip install flask-bcrypt --ignore-installed --no-cache-dir
Kurt Moseley
Kurt Moseley
19,309 Points
Kurt Moseley
Kurt Moseley
19,309 Points

Tried uninstall/install, still same error.

Through PyCharm I uninstalled: flask-bcrypt 0.7.1, bcrypt 2.0, python-bcrypt 0.3.1, and py-bcrypt 0.4

and reinstalled then it worked.

Nathan Tallack
Nathan Tallack
22,164 Points
Nathan Tallack
Nathan Tallack
22,164 Points

Yeah. It get's kinda tricky when that happens. I am not fluent enough with Python to understand what happens when modules conflict like that.

Take care that doing it through PyCharm may have only been at the project level, so you may run into the same problem with another project later.

When you find time you should fix it up systemwide so that future projects won't have the problem. :)

Great work!!! :D