Question

I have three files:

testimports module:

#import moduleTwo
import moduleOne

hiString = "Hi!"

moduleOne.sayHi()

moduleOne:

import moduleTwo

class sayHi():
    moduleTwo.printHi()

moduleTwo:

import testimports

def printHi():
    print(testimports.hiString)

If I run testimports, I get:

Traceback (most recent call last):
  File "..file path snipped../testimports/src/testimports.py", line 2, in <module>
    import moduleOne
  File "..file path snipped../testimports/src/moduleOne.py", line 1, in <module>
    import moduleTwo
  File "..file path snipped../testimports/src/moduleTwo.py", line 1, in <module>
    import testimports
  File "..file path snipped../testimports/src/testimports.py", line 6, in <module>
    moduleOne.sayHi()
AttributeError: 'module' object has no attribute 'sayHi'

If, however, I uncomment the import moduleTwo line in testimports, the program gets to this point before it stops working:

Traceback (most recent call last):
  File "..file path snipped../testimports/src/testimports.py", line 1, in <module>
    import moduleTwo
  File "..file path snipped../testimports/src/moduleTwo.py", line 1, in <module>
    import testimports
  File "..file path snipped../testimports/src/testimports.py", line 2, in <module>
    import moduleOne
  File "..file path snipped../testimports/src/moduleOne.py", line 3, in <module>
    class sayHi():
  File "..file path snipped../testimports/src/moduleOne.py", line 4, in sayHi
    moduleTwo.printHi()
AttributeError: 'module' object has no attribute 'printHi'

How would I go about resolving this circular dependency problem?

Answer 1

Rewriting testimports.py may help:

import moduleOne

hiString = "Hi!"

def main ():
    moduleOne.sayHi()

if __name__ == "__main__":
    main ()