Python字典遍历

def dict_test():
    #初始化字典
    dict= {"a1":"1","a2":"2","a3":"3"}

    #遍历Key
    print("遍历Key\n")
    for key in dict:
        print(key+':'+dict[key])
    #遍历Key
    print("遍历Key\n")
    for key in dict.keys():
        print(key + ':' + dict[key])
    #遍历Value
    print("遍历Value\n")
    for value in dict.values():
        print(value)
    #遍历字典项
    print("遍历字典项\n")
    for kv in dict.items():
        print(kv)
    #遍历键值对
    print("遍历键值对\n")
    for k,v in dict.items():
        print("k:",k,"v:",v)
if __name__ == '__main__':
    dict_test()