Rule Definition
Using global variables in short scripts can facilitate the rapid development of effective solutions. Python being originally a scripting language has the "global" keyword to declare in a given code block the scope of a variable as global. However use of global variables in OOP is strongly discouraged as it is contrary to encapsulation. Indeed, relying on global state can be a source of unexpected behavior because different elements in a code can freely modify it. Using global variables in Python can also have a negative impact on performance as code involving only local variables runs significantly faster.

Remediation
Create a static data member in the appropriate class to replace the global variable.

Violation Code Sample

status = 0 

def set_status(value): 
    global status 
    status = value

Fixed Code Sample

class Status: 
    def __init__(self): 
        self.status = None
    
    def set_status(value) 
        status = value