class statusbar:
    def __init__(self, repeat, length=30, step=1):
        self.length = length
        self.repeat = repeat
        self.steps = repeat/length
        self.step = step

    def __iter__(self):
        self.current = 0
        return self
    
    def __next__(self):
        print("["+("#"*int(self.current/self.steps))+(" "*(self.length-int(self.current/self.steps)))+"]"+f"{self.current}/{self.repeat}", end="\r", flush=True)
        if self.current >= self.repeat:
            print()
            raise StopIteration
        self.current += self.step
        return self.current-1