CODEWITHSUNDEEP
pythonfunctionimportmodulepython-2.x
Loric
Loric

Reputation: 1708

Import a function from __init__.py in Python

I have a module like below and I want to include a function from __init__.py in myfile.py

/mymodule
   /__init__.py
   /myfile.py

The init is

import mymodule.myfile

myInt = 5

def myFunction():
    print "hey"

and the myfile file

from mymodule import myFunction
from mymodule import myInt
...

So the myInt include works but not the myFunction one. Do you have an idea why?

Thanks

EDIT

The error message is ImportError: cannot import name myFunction

Upvotes: 0

Views: 1273

Answers (1)

Martijn Pieters
Martijn Pieters

Reputation: 1121554

You have a circular import:

  • myInt and myFunction have not yet been assigned to when the import mymodule.myfile is run.
  • mymodule.myfile then tries to import the names that are not yet assigned to from mymodule.

Your options are to move myInt and myFunction to a separate shared module:

mymodule/
    __init__.py
    myfile.py
    utilities.py

where __init__.py imports from both mymodule.myfile and mymodule.utilities, and myfile.py imports from mymodule.utilities.

Or you can import just the module in myfile.py and defer referencing the myInt and myFunction names until later (in a function call, for example):

import mymodule

def somefunction():
    mymodule.myFunction(mymodule.myInt)

By the time somefunction() is called all imports have completed and mymodule.myFunction and mymodule.myInt have been assigned to.

Upvotes: 1

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