# 今日作业：
# 1、检索文件夹大小的程序，要求执行方式如下
# python3.8 run.py 文件夹
# import os
# path=sys.argv[1]
# size= 0
# for line in os.listdir(path):
# path2 = os.path.join(path, line)
# if os.path.isfile(path2):
# size+=os.path.getsize(path2)
# elif os.path.isdir(path2):
# size+=os.path.getsize(path2)
# print(size)
# 程序的输入方式为 python3.8 该py文件的路径 要查看文件夹的路径
# 2、明天上午日考：随机验证码、模拟下载以及打印进度条、文件copy脚本
#验证码
# import random
# def make_code(size=4):
# res = ''
# for i in range(size):
# s1 = chr(random.randint(65,90))
# s2 = str(random.randint(0,9))
# res+=random.choice([s1,s2])
# return res
# print(make_code(6))
#打印进度条
# import sys
# import time
# def progress(percent,width=50):
# if percent>1:
# percent=1
# show_str = ('[%%-%ds]'%width)%(int(percent*width)*'*')
# print('\r%s %s%%'%(show_str,int(percent*100)),end='')
#
# data_size=10250
# recv_size=0
# while recv_size < data_size:
# time.sleep(0.1) #模拟数据的传输延迟
# recv_size+=1024 #每次收1024
#
# percent=recv_size/data_size #接收的比例
# progress(percent,width=70) #进度条的宽度70
#文件copy
# src_file=sys.argv[1]
# dst_file=sys.argv[2]
# with open(r'%s' %src_file,mode='rb') as read_f,\
# open(r'%s' %dst_file,mode='wb') as write_f:
# for line in read_f:
# write_f.write(line)