Trouble with making modules 'global'

[pythonfm at gmail.com]

I just realized that the problem is related to python 3.8 and not to 3.7. 

Am Donnerstag, 4. Juni 2020 05:48:31 UTC+2 schrieb pyth... at gmail.com:
> Hi,
> 
> I am struggling with making modules global for all definitions in my code.
> I faced the problem with the pyomo modules but can generate the error with pandas too.
> 
> The model structure looks as follow: 
> 
> I have 3 '.py' files each of them containing definitions. The first controls inputs and outputs and starts an optimization.py file ( optimization.py). Within optimization.py I call a third .py file (model.py) that includes a series of definitions, representing mathematical equations of a optimization model.
> 
> 
> 
> (1) Main.py
> import pandas as pd
> 
> def main_part()
> ... Result = optimization_def(x,y,z)
> ...
> 
> (2) Optimization.py
> def optimization(x_l,y_l,z_l)
> ... O = obejctive(x_l,y_l)
> ...
> 
> (3) Model.py
> def objctive(x_a,x_b)
> ...
> def constraint(x_a,z_a)
> ....
> 
> 
> I do not understand why pd is not known in def optimization() as well as in objctive().
> I tried to make it global by adding global pd in Main.py
> 
> 
> I would appreciate any support. Thanks in advance
> Frank