为什么我不能在 1 行中使用 python 打印句子和变量值？

Question

Im try to calculating available subnet with python. just simple call but error.

    print ("the IP is valid")
    result = (2 ** (32 - int(mask)) - 2)
    print ("net available: ".format(result))

Answer 1

print ("the IP is valid")
result = (2 ** (32 - int(mask)) - 2)
print ("net avaiable: {0}".format(result))