How can I import a variable from another script without executing it

[ThomasFab]

I'm not sure I understand what you want here. Putting code in a if __name__=="__main__": section is what you do when you don't want it to be run on import.

If you want it to be run on import, don't put it in such a section. Is that possible?

It is "possible", but I´d like to avoid run the script while import again, to save time/performance. This stuff I`m working on will get quite big the next months..



My prefered way would be:

Load via ImportScript
Process data with other script
(do some other stuff)
Process imported data with a 3rd script (without reloading the .csv, because this is slow)





I tried another example:

example_import_csv

import pandas as pd
global df



if __name__=="__main__":
    df = pd.DataFrame([3, 2, 1])

example_plot

from example_import_csv import df
    
    


df2 = df   #generate a second dataFrame 

it works perfectly, but only if I do NOT use if __name__=="__main__":


If I do, this error occurrs:

Error:
ImportError: cannot import name 'df' from 'example_import_csv' (U:\031_Python\030_eigene_Scripte\example_import_csv.py)

So, to make my question more precise: Is there a way to NOT let "example_import_csv" run during the import at example_plot (e.g. with if __name__=="__main__":), AND still use the variable df?



Thank you for helping!!