Python: Can't import a function from parent directory-CodePudding

If I have the following directory structure:

Folder1/
└─ Folder2/
──── a.py
──── b.py
└─── test/
────── c.py

a.py

import b

def say_hello():
    print("Hello World")

def main():
    say_hello()

if __name__ == '__main__':
    main()

b.py

def say_bye():
    print('bye!')

c.py

from hello import a

if __name__ == '__main__':
    a.say_hello()

I'm trying to run c.py But I get this error message:

    import b
ModuleNotFoundError: No module named 'b'

what did I do wrong here?

CodePudding user response：

if a and b are in the same directory add before the import:

sys.path.append(os.path.abspath(os.path.dirname(__file__)))

this will add the relative folder to path.

CodePudding user response：

When your in python, you have many Import errors but this is really common, try to do import .b instead of import b.