I can't use the module I created in my main python file

Question

I created a module named module_1:

def learn(programming_lang):
  print("I am learning " + programming_lang)

and I want to use it in my main Python file.

module_1.learn("Python")   

How can I do that?

Answer 1

in main Python file add this line

import module_1

Answer 2

I added the import module_1 statement and everything went well:)

import module_1