如果Python包仅仅是一个模块，那么该模块可以从姊妹模块中导入并公开其功能吗？

Question

Suppose I have a package structured like:

root
+-- package_as_a_module.py
+-- setup.py
+-- requirements.py

In my case, package_as_a_module.py has grown much larger than initially anticipated, and it's becoming difficult to manage. Is it possible to add a new module to the root directory, say utils.py :

# utils.py
def func_a()
  return "Hi!"

and then expose the functions of utils.py via an import statement into package_as_a_module.py like:

# package_as_a_module.py
from utils import func_a

So that after installation, I can use from package_as_a_module import func_a ?

I attempted this without success, here . The modules from which the main module imports are not recognized, and the import fails. I suspect this might be possible with a true package structure, maybe in the init .py file or something. I'll give that a whirl next.

If no one proposes an alternative, I'll answer my own question in the negative.

Answer 1

You can.

In your file main_module.py you did not call the print_all() function, that is why nothing happened.

from module_a import print_hello_world as phw_a
from module_a import print_hello as ph
from module_b import print_hello_world as phw_b


def print_all():
    ph()
    phw_a()
    phw_b()

print_all()  # You need to call a function for it to do something