Python3用sys和time模块实现进度条

import sys
import time
def view_bar(num, total):
    rate = float(num) / float(total)
    rate_num = int(rate * 100)
    r = '
[%s%s]%d%%' % ("="*num, " "*(100-num), rate_num, )
    sys.stdout.write(r)
    sys.stdout.flush()

if __name__ == '__main__':
    for i in range(0, 101):
        time.sleep(0.1)
        view_bar(i, 100)

另一种函数模式：

　　会根据num的变化，实时输出进度条的进度，从而实现了类似上传下载中的进度条模式。

 def view_bar(num, mes):
        """
        进度条方法
        :param num: 百分比数字
        :param mes: 输出信息
        :return:
        """
        rate_num = num
        number = int(rate_num / 4)
        hashes = '=' * number
        spaces = ' ' * (25 - number)
        r = "
33[31;0m%s33[0m：[%s%s]33[32;0m%d%%33[0m" % (mes, hashes, spaces, rate_num,)
        sys.stdout.write(r)
        sys.stdout.flush()