Why cannot I import a .py file to another within the same directory?

Question

I have the following 4 python files within the folder SubFolder , assembled as such:

   CodeFolder
       SubFolder
           GeneticAlgorithm.py
           main.py
           heuristic1.py
           heuristic2.py

I am trying to import the file GeneticAlgorithm.py within my main.py file, using the import statement at the beginning of the class:

import GeneticAlgorithm

The problem: PyCharm is highlighting this and says " no module named GA ".

Any clues as to what may be causing this issue and how to solve it? Thank you!

Answer 1

Correct me if I'm wrong but you might not have GA module in your GeneticAlgorithm.py

If you do, then you can do similar to below:

Similar to your folder structure:

From main.py call GeneticAlgorithm.py. For example:

from GeneticAlgorithm import GA


def main():
    ga_obj = GA(mutation_rate=0.5)
    print("Call GA module")
    

if __name__ == '__main__':
    main()

If we look at the GeneticAlgorithm.py

class GA:
    def __init__(self, mutation_rate):
        self.mutation = mutation_rate

We have GA class.

This is a simple demonstration of how you can use.