Calling functions from another file

[jp2017]

Hi,

I have two files and I want to call some functions from file A I have done it this way but is not working can someone please tell me what is the issue here?

In file B I have the code below:

from A import ClassA

class B(unittest.TestCase):
   def testA(self):
      ClassA.testA()

Thanks

[buran]

where A.py is located? i.e. are you sure Python can find it? Does it have ClassA.testA() method? Can you show us A.py and the full traceback you get?

[jp2017]

File A and B are in separate folders. In File A my code are like this:

class A(unittest.Testcase):
   def testA(self):
       some code...

As you can see in File B I want to call the testA function but this way does not work:

from FileA import A  
 
class B(unittest.TestCase):
   def testA(self):
      A.testA()

[buran]

File A and B are in separate folders.

I would guess that it doesn't work because the import doesn't work - i.e. it cannot find FileA.
read https://docs.python.org/3/tutorial/modul...earch-path

or you should make a package that include FileA
https://docs.python.org/3/tutorial/modul...l#packages

Also nice introduction from Mouse vs. Python
https://www.blog.pythonlibrary.org/2016/...t-imports/

[gruntfutuk]

Importing a python module from a different directory to that which your main module is located in is somewhat fiddly.

Take a look at the stack overflow answer for approaches for different versions of python.

[buran]

Importing a python module from a different directory to that which your main module is located in is somewhat fiddly.

Take a look at the stack overflow answer for approaches for different versions of python.

Not sure it is good idea for OP to go this road (i.e. interface to the internals of import), as they are not familiar how import itself works

[gruntfutuk]

Importing a python module from a different directory to that which your main module is located in is somewhat fiddly.

Take a look at the stack overflow answer for approaches for different versions of python.

Not sure it is good idea for OP to go this road (i.e. interface to the internals of import), as they are not familiar how import itself works

I'm a bit confused at the level setting on here, as earlier I chose not to inflict PEP8 on someone not understanding indentation and someone (you?) felt otherwise, and now I'm being criticised for introducing more complex importing options.

I guess I shall get used to it after a while.

Alternatively, as a beginner at Python, maybe I should just stop trying to help.

[buran]

I'm a bit confused at the level setting on here, as earlier I chose not to inflict PEP8 on someone not understanding indentation and someone (you?) felt otherwise, and now I'm being criticised for introducing more complex importing options. I guess I shall get used to it after a while. Alternatively, as a beginner at Python, maybe I should just stop trying to help.

Sorry, if I'm misunderstood - in both cases my comments were not meant to criticise you in any way. In both cases I just wanted to make it more clear to the OP. Actually I liked your addition in this thread.

[gruntfutuk]

Thanks for clarifying. I'm trying. Not much on the like front let alone reputation yet, but it's not really a competition. I find I learn quicker if I try to help others.

[Larz60+]

you can use an __init__.py file at the top level of your app
and an empty on in each directory that has shared code.
To learn how to properly use, watch this (very enjoyable) video by David Beazley:
https://www.youtube.com/watch?v=0oTh1CXRaQ0