不說廢話剃浇，歡迎留言交流唇礁，給我打賞我也不介意嗷杖们！

def str_bin_to_normal(str_bin_ip):
    return '.'.join([str(int('0b'+i,base=2)) for i in [str_bin_ip[0:8], str_bin_ip[8:16], str_bin_ip[16:24], str_bin_ip[24:32]]])


def main():
    choice = input("1.計算子網(wǎng)范圍和可用主機(jī)數(shù)\n2.判斷兩個ip地址是否屬于同一網(wǎng)段\n請選擇操作(按1或2萝招，回車)：")
    if choice == '1':
        net_lst, ori_mask = input("請輸入網(wǎng)段(形式：x.x.x.x/x)：").split('/')
        subnet_num = int(input("請輸入子網(wǎng)數(shù)："))
        net_str_bin = "".join([bin(x).lstrip('0b').rjust(8,'0') for x in [ int(i) for i in net_lst.split(".")]])   # 二進(jìn)制字符串ip.
        #"".join([bin(x).lstrip('0b').rjust(8,'0') for x in [ int(i) for i in  net_lst.split(".")]]) 將IP地址轉(zhuǎn)化為二進(jìn)制字符串
        org_mask_str_bin = '1'*int(ori_mask)+'0'*(32-int(ori_mask))
        # print("用戶輸入的網(wǎng)絡(luò)地址：",net_str_bin)
        # print("用戶輸入的地址掩碼：",org_mask_str_bin)

        x = []
        for i in range(0, 32):
            tmp = int(net_str_bin[i]) & int(org_mask_str_bin[i])
            x.append(str(tmp))
        net_base_str_bin = ''.join(x)
        # print("計算出來的網(wǎng)絡(luò)地址：",net_base_str_bin)

        # 這里計算需要借用幾個主機(jī)位
        i = 0
        while subnet_num > 2 ** i:
            i += 1
        len_of_subnet = i
        # print("需要借用的主機(jī)位數(shù)：", len_of_subnet)

        new_mask = '1'*(int(ori_mask)+len_of_subnet) +'0'*(32-int(ori_mask)-len_of_subnet)
        # print("計算得出新子網(wǎng)掩碼：",new_mask)

        # 計算子網(wǎng)的起始地址段衔瓮，其實(shí)就是計算出來的網(wǎng)絡(luò)地址net_base_str_bin，將其轉(zhuǎn)化為正常的ip地址顯示
        sub_net_start_bin = net_base_str_bin
        # 計算子網(wǎng)的末尾地址端：計算出來的網(wǎng)絡(luò)地址的前ori_mask位+借用主機(jī)位全1+主機(jī)位全0
        sub_net_end_bin = net_base_str_bin[0:int(ori_mask)] + '1'*len_of_subnet + '0'*(32-int(ori_mask)-len_of_subnet)
        # 計算主機(jī)可用ip數(shù)量
        host_allow_num = (2 ** (32 - int(ori_mask) - len_of_subnet) - 2) * 2 ** len_of_subnet
        if 2**len_of_subnet < subnet_num or host_allow_num <= 0:
            print("該網(wǎng)段不允許劃分這么多子網(wǎng)！")
            return

        print('=========================================')
        print("計算出子網(wǎng)開始地址：",str_bin_to_normal(sub_net_start_bin)+'/{}'.format(int(ori_mask)+len_of_subnet))
        print("計算出子網(wǎng)結(jié)束地址：", str_bin_to_normal(sub_net_end_bin)+'/{}'.format(int(ori_mask)+len_of_subnet))

        print("可用的主機(jī)地址數(shù)量：",host_allow_num)

    elif choice == '2':
        ip1, mask1 = input("請輸入第一個IP地址(形式：x.x.x.x/x)：").split('/')
        ip2, mask2 = input("請輸入第二個IP地址(形式：x.x.x.x/x)：").split('/')
        net_str_bin_ip1 = "".join([bin(x).lstrip('0b').rjust(8, '0') for x in [int(i) for i in ip1.split(".")]])
        org_mask_str_bin_ip1 = '1' * int(mask1) + '0' * (32 - int(mask1))

        x1 = []
        for i in range(0, 32):
            tmp = int(net_str_bin_ip1[i]) & int(org_mask_str_bin_ip1[i])
            x1.append(str(tmp))
        net_base_str_bin1 = ''.join(x1)

        net_str_bin_ip2 = "".join([bin(x).lstrip('0b').rjust(8, '0') for x in [int(i) for i in ip2.split(".")]])
        org_mask_str_bin_ip2 = '1' * int(mask2) + '0' * (32 - int(mask2))

        x2 = []
        for i in range(0, 32):
            tmp = int(net_str_bin_ip2[i]) & int(org_mask_str_bin_ip2[i])
            x2.append(str(tmp))
        net_base_str_bin2 = ''.join(x2)
        print('=========================================')
        if net_base_str_bin1 == net_base_str_bin2:
            print("他們屬于同一個網(wǎng)段：",str_bin_to_normal(net_base_str_bin1)+'/{}'.format(mask1))
        else:
            print("他們不屬于同一個網(wǎng)段")
    else:
        print("請輸入1或者2")


if __name__ == "__main__":
    main()