package script cant find sibling script when executed from outside

[Bock]

Hello together,
i just finished my first own package but facing a problem when importing and executing things from outside:
I made a very minimal example as demonstration:

Folder "mymodule" contains:

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#__init__.py # empty   #constants.py my_const = 42   #function.py def my_func():        print(my_const)

On the same level as mymodule is :

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# test.py from mymodule.function import my_func my_func()

Unfortunately i get the error message: "no module named 'constant' " which confuses me since i can import constant in function.py properly.

Question: Why is that? ( Maybe this code should that never be necessary - let me know anything you have in mind :)

Thank you very much,
Bock

PS: how can i make a "tab" in the python brackets of the thread editor?

[deanhystad]

Please post the error message and the steps required to produce. Also post information about rhe directory structure.

[Gribouillis]

Unfortunately i get the error message: "no module named 'constant' "

According to your post, the module is named 'constants' and not 'constant'. Could this be the error?

You could try a relative import in function.py

1	from .constants import my_const

Note that 'relative' import means relative to the python packages hierarchy, not the file system's directories tree.

[snippsat]

As you see all files as you describe.

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C:\Python310\mymodule λ ls __init__.py  constants.py  function.py  test.py

my_func() will never work have to change to this.

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#function.py from mymodule.constants import my_const   def my_func():     print(my_const)

Now can run test.py,and it will work.

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C:\Python310\mymodule λ python test.py 42

A little more about how a package works.

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C:\Python310\mymodule λ ptpython >>> import mymodule >>> >>> dir(mymodule) ['__builtins__', '__cached__', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__path__', '__spec__'

As see here so is nothing added to namespace if just import like this.
I like to modify so can just to simple import like this and files are added.
In __init__.py

1 2	import mymodule.constants import mymodule.function

Test again.

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C:\Python310\mymodule λ ptpython >>> import mymodule >>> >>> dir(mymodule) ['__builtins__', '__cached__', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__path__', '__spec__', 'constants', 'function', 'mymodule']   >>> mymodule.constants.my_const 42   >>> mymodule.function.my_func() 42

Or can import like this without modify __init__.py.
This will bring constants and function into the namespace of package.

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C:\Python310\mymodule λ ptpython >>> from mymodule import constants, function >>> constants.my_const 42 >>> function.my_func() 42

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Some more examples you can look in link in this post.