python: heap Tree, hash Table

 

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# encoding: utf-8 # 版權所有 2024 ©塗聚文有限公司 # 許可資訊查看：言語成了邀功的功臣，還需要行爲每日來值班嗎？ # 描述： 主、子表單 窗體傳值  Parent-child form operations # Author    : geovindu,Geovin Du 塗聚文. # IDE       : PyCharm 2023.1 python 3.11 # OS        : windows 10 # Datetime  : 2024/10/24 20:09 # User      : geovindu # Product   : PyCharm # Project   : IctGame # File      : ui/main.py # explain   : 學習   import heapq  # https://docs.python.org/3/library/heapq.html import hashlib   h = [10, 21, 5, 12, 88, 3, 100, 111, 200] heapq.heapify(h)  # 取出了最小的 print(h) val = heapq.heappop(h) print(h) print('最小三个：', heapq.nlargest(3, h)) print('最大三个：', heapq.nsmallest(3, h)) print(h)     def checkname(name: str):     if voted[name]:         print('你已投过票了')     else:         print('欢迎你投票')         voted[name] = True     voted = {'Jason': None, 'Lisa': None, 'Mike': None}   while True:     name = input("请输入姓名：")     if name in voted:         checkname(name)     else:         print('你不是投票者')     yn = input("y/n?")     if yn == 'y' or yn == 'Y':         pass     else:         break   data = hashlib.md5()  #sha1() data.update(b'geovindu') print('hash value=',data.digest()) print('hassh value(16 byte)',data.hexdigest()) print(type(data)) print(type(data.hexdigest())) school='涂聚文大学' data.update(school.encode('utf-8')) print('hash value=',data.digest()) print('hassh value(16 byte)',data.hexdigest()) print(type(data)) print(type(data.hexdigest())) print(hashlib.algorithms_available) #平台的杂凑算法  {'sha512', 'shake_128', 'whirlpool', 'sha3_256', 'sha256', 'sha1', 'sha512_224', 'mdc2', 'md5-sha1', 'sha3_224', 'sha3_384', 'shake_256', 'blake2s', 'md5', 'sha224', 'sm3', 'blake2b', 'md4', 'sha384', 'sha3_512', 'sha512_256', 'ripemd160'}   filename='1.txt' with open(filename,mode='rb') as fn:     btxt=fn.read()     data.update(btxt) print('hash value=',data.digest()) print('hassh value(16 byte)',data.hexdigest()) print(type(data)) print(type(data.hexdigest()))