Call function from a file B in a loop in file A
Question: I have a python file B with all my function and a main code which is in loop
of 0.25 sec, and I want to call this file in a loop in my file A. Can you get
my weird mind ? What I did but only read the loop from file B once :

    
    
    #FileA  
    while 1:
        from FileB import * 
    

And my file B :

    
    
    #FileB
    while t<0.25:
        #my stuff
    

Thanks.

PS : I forget to mention that i can't modify the file B.


Answer: The `import` statement only reads the target module one time.

If you have control of both files, I'd suggest that you make your loop a
function in file B:

    
    
    def main():
        while t<0.25:
            #my stuff
    
    if __name__ == '__main__':
        main()
    

Then you can call it repeatedly from file A:

    
    
    from fileB import main as Bmain
    
    while 1:
        Bmain()
    

If you don't have control of the source code for the files (meaning: if the
code comes from someone else), there are a few options. Probably the easiest
and fastest to code would be to use the
[`os.system(command)`](https://docs.python.org/3/library/os.html?highlight=os.system#os.system)
function to run the contents of fileB in a separate process.

