Question

I have been trying to fix this for a bit, and I must be missing something basic here (forgive me, I am relatively new to Python development):

I have a package structure like this:

base
|
 -->util
    __init__.py
    Class1.py
    Class2.py
__init__.py
Main.py

My classes are fairly benign:

class Class1(object):

    def __init__(self):

    # some methods...


class Class2(object):

    def __init__(self):

    # more methods...

In the Main.py, I have:

import utils

if __name__ == '__main__':
    c1 = utils.Class1()
    c2 = utils.Class2()

My PYTHONPATH is setup to include src, src\base, and src\base\utils. But, Python gives me this error when trying to run Main.py:

AttributeError: 'module' object has no attribute 'Class1'

Has someone encountered this, and do you know how to fix it? Thanks!

Answer 1

This is a little different than Java. In java each file is usually a class, in python, each file is a module. Given the scenario you describe here, you would do:

import utils.Class1
import utils.Class2

if __name__ == '__main__':
    c1 = utils.Class1.Class1()
    c2 = utils.Class2.Class2()

You could do a number of things here. For example, you could have a module called “resources” like this:

base ->
    utils ->
        resources.py

which contains both Class1 and Class2. Then you could do something like:

import utils.resources


c1 = utils.resources.Class1()

etc. But the key is that classes != files in python