ModuleNotFoundError was introduced in Python 3. It is raised when the
module does not exist. On the other hand, ImportError is raised during
any import failure. For example, a syntax error or other runtime error.

Using ModuleNotFoundError means that errors unrelated to a missing
package will be propagated to the user. PyJWT doesn't know how to handle
these.

This also allows more functions to always be available for import

pyugrade is a command line tool to automatically update Python syntax to
modern usage and patterns. For additional details, see:

https://github.com/asottile/pyupgrade

Changes made by the tool:

- Use short Python3 super() syntax.
- Use f-strings when they are simple and more readable.
- Drop Python 2 u prefix from strings.
- Drop "r" argument from open(). It is the default and so specifying it is
  unnecessary.

* Introduce better experience for JWKs

* Remove explicit inheritance

* Add tests for PyJWK

* Fix failing test

* Get rid of lambda