Creating a simple progression bar

simple_progbar

import sys, time
class progbar:
    def __init__(self, x, stream = sys.stdout,
                 char = "#"):
        self.x = x
        self.stream = stream
        self.char = char
        
    def __iter__(self):
        self.n = len(self.x)
        self.count = 0
        self.start = time.time()
        for xi in self.x:
            yield xi
            self.update()
            self.count += 1
        
    def update(self):
        self.stream.write(self.__str__())
        self.stream.flush()
    def __repr__(self):
        self.stream.flush()
        s = f"\r[{self.char * self.count}{' ' * (self.n - self.count)}]"
        s+= f"{time.time() - self.start : .2f}"
        return s
    def __str__(self):
        return self.__repr__()
        

for i in progbar(range(10), char = "#"):
    time.sleep(0.1)
    pass