題目：

密碼生成器，輸入位數返回密碼，要求混合使用小寫字母，大寫字母，數字和符號

解答：

靈活使用random

import string
import random
def get_password_normal(size, chars):
    return ''.join(random.choice(chars) for _ in range(size))
    
if __name__ == "__main__":
    # chars = string.printable[:-2]
    chars = "abcdefghi[email protected]#$%^&*()?"
 

    size = int(input('獲得密碼位數（4~12）：'))
    passwd = get_password_normal(size, chars)
    print(passwd)

生成強密碼（大小寫字母，數值，符號 都要包括在內）： 思路一：隨機生成密碼，判斷是否滿足要求，滿足要求則返回

import random
import string

def get_password_strong(size, chars):
    chars_class = [string.ascii_lowercase, string.ascii_uppercase, string.
 
digits, '[email protected]#$%^&*()?']    
    while True:
        judgment = [1 for _ in range(4)]
        passwd = ''.join(random.choice(chars) for _ in range(size))
        for i, item in enumerate(chars_class):
            if any([1 if j in item else 0 for j in passwd]):
                judgment[
 
i] = 0
        if not any(judgment):
            return passwd
            break
            
if __name__ == "__main__":
    chars = "a[email protected]#$%^&*()?"
    size = int(input('獲得密碼位數（4~12）：'))
    passwd = get_password_strong(size, chars)
    print(passwd)

思路二：將密碼位數分配到四個部分，再隨機選取，然後shuffle

import random
import string

def get_password_strong(size):
    chars_class = [string.ascii_lowercase, string.ascii_uppercase, string.digits, '[email protected]#$%^&*()?']    
    num_pick = sorted(random.sample(range(1, size), 3))
    num_pick.insert(0, 0)
    num_pick.append(size)
    pick_lsit = list((map(lambda x,y:y-x ,num_pick[:-1],num_pick[1:])))
    passwd_list = []
    for i, item in enumerate(chars_class):
        passwd_list.extend([random.choice(item) for _ in range(pick_lsit[i])])
     # 重新排序
    random.shuffle(passwd_list)        
    return ''.join(passwd_list)
    
if __name__ == "__main__":
    size = int(input('獲得密碼位數（4~12）：'))
    passwd = get_password_strong(size)
    print(passwd)