詳見3
#!/usr/bin/env python
# -*- coding:utf-8 -*-
# 1.獲取文件夾的大小
# import os
# def dir_size(path):
# ret = os.walk(path)
# sum_size = 0
# for base_path,dir_lst,file_lst in ret:
# for file_name in file_lst:
# size = os.path.getsize(os.path.join(base_path,file_name))
# sum_size += size
# return sum_size
# ret = dir_size(r'D:\視頻\全棧 21期\day23')
# print(ret)
# os.path.abspath() # 不可能能幫你確認一個文件的絕對路徑
# 2.校驗兩個大文件的一致性
# import hashlib
# path1 = r'D:\視頻\全棧21期\day14\05 python fullstack s21day14 回顧和補充：作業題講解.mp4'
# path2 = r'D:\視頻\全棧21期\day14\back.mp4'
# import os
#
# def file_md5(path):
# size = os.path.getsize(path)
# md5 = hashlib.md5()
# with open(path,mode='rb') as f:
# while size>1024:
# content = f.read(1024)
# md5.update(content)
# size -=1024
# else: #此處可以不寫,爲了嚴謹起見修改了size=0
# content = f.read(size)
# md5.update(content)
# size = 0
# return md5.hexdigest()
# print(file_md5(path1)== file_md5(path2))
# with open(path1,mode='rb') as f: # 10245
# while size > 0:
# content = f.read(1024)
# md5.update(content)
# size -= 1024
# 3.發紅包 理解爲有一條線0到200 假設十個人搶紅包 則隨機切9刀
# import random
# def red_pack(money,num):
# ret = random.sample(range(1,money*100),num-1) #找到切割點
# ret.sort()
# ret.insert(0,0) #增加起始位置
# ret.append(money*100) #增加結束爲止
# for i in range(len(ret)-1):
# yield (ret[i+1] - ret[i])/100 #返回生成器 ,
#
# ret = red_pack(200,5) #出結果
# for i in ret:
# print(i)
