python小功能 模拟下载进度条打印

python小功能 模拟下载进度条打印

#!/usr/bin/env python3
# -*- coding:utf-8 -*-

import time


def progress(arg):
	if arg > 1:
		arg = 1
	# 设计进度条和百分比
	image = int(50 * arg) * '>'
	percent = str(int(arg * 100)) + '%'
	# 打印进度条
	print('\r[%-50s] %s' % (image, percent), end='')
	# 下载完成判断并提示
	if arg == 1:
		print('\nDownload completely!')


recv_size = 0    # 下载文件大小
total_size = 666666  # 文件总大小

while recv_size < total_size:
	# 模拟下载速度
	time.sleep(0.01)
	recv_size += 2048
	# 计算比例
	ratio = recv_size / total_size
	progress(ratio)

运行结果

[>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>] 100%
Download completely!