パスワードセキュリティチェックのコード

#       ：
#   1.              
#   2.         8 
#
#       ：
#   1.        、       
#   2.         8 
#
#       ：
#   1.        、       
#   2.          
#   3.         16 

def passwd_check():
    symbols = r'''`!@#$%^&*()_+-=/*{}[]\|'";:/?,.<>'''
    chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
    nums = '0123456789'

    passwd = input('            ：')

    #     
    length = len(passwd)

    while (passwd.isspace() or length == 0):
        passwd = input("        （   ），     ：")
        length = len(passwd)

    if length <= 8:
        flag_len = 1
    elif 8 < length < 16:
        flag_len = 2
    else:
        flag_len = 3

    flag_con = 0

    #           
    for each in passwd:
        if each in symbols:
            flag_con += 1
            break

    #         
    for each in passwd:
        if each in chars:
            flag_con += 1
            break

    #         
    for each in passwd:
        if each in nums:
            flag_con += 1
            break

    while 1:
        print("           ：", end='')
        if flag_len == 1 or flag_con == 1:
            print(" ")

        elif flag_len == 3 and flag_con == 3 and (passwd[0] in chars):
            print(" ")
            break

        else:
            print(" ")

        break

passwd_check()