Python: Can't import a function from parent directory

Question

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?

• depperm: Does this answer your question? python import module from parent package
• depperm: or this or this

Answer 1

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.