An immature idea.
Python now has a type prompt, so you can provide a parameter for the Python interpreter to control whether to open the check type operation.

For example, in the code, I explicitly use the type prompt, such as:

# Test1.py

def foo(a: str, b: str) -> str:

    c = None # type:str

    return 'hi'


We can run the code with a parameter, such as

python -T test1.py


To prevent the Python interpreter from detecting the variable types in it, so as to improve the running speed.

Thank you for reading.