def set_time(self, hour=0, minute=0, second=0, millisecond=0): if not (0 <= hour < 24): raise ValueError(f'Hour ({hour}) must be 0-23') self.hour = hour if not (0 ...

The singleton pattern in Python ensures that a class has only one instance and provides a global access point. Different implementation methods may lead to discrepancies when obtaining the memory ...

Once upon a time, everything was a global variable. Immutability and pure functions delivered us from the chaos.