How do you invoke a function in a module which is in a package?

Question

I have a project structure of:

root_dir/
└── app/
    ├── __init__.py
    ├── mymodule.py

inside of mymodule.py I have the following function:

def hello():
    print('hello world')

If i call python from inside the root directory I'd like to do the following:

>>> import app
>>> app.mymodule.hello()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'app' has no attribute 'mymodule'

Is there anyway to invoke the hello function?

Answer 1

jonrsharpe comment is right. When you reference a package you are referring to the __init__.py module and this module doesn't contain any reference to mymodule . That's why you cannot do app.mymodule in the first place.