Question

我试图制作一个简单的调查机器人，但我遇到了第二个if语句的问题。它只是忽略了if和elif，并直接进入else语句。我已经尝试了所有的东西，即使它可能是一个简单的解决方案，请帮助......

 import sys

 yes = "yes"
 no = "no"
 experience_good = "yes"
 contact = "1"

 print("How many times have you bean contacted by us in the past quarter (3 months)")
 contact = sys.stdin.readline()

 if contact != 0:
     print("Was your experience was us good? Type a 1 for yes or 0 for no")
     experience_good = sys.stdin.readline()
     print("experiencence_good is", experience_good)
     # The above line was just to double check the variable was inputted 
correctly
     if experience_good is 1:
         print("Good to hear that.")
     elif experience_good is 0:
         print("Sorry about that. What could we be doing better?")
         doing_better = sys.stdin.readline()
     else:
         print("Stuff's been messed up")

我得到的输出只是：

在过去的一个季度中，我们与您联系过多少次（3   个月）

3

你的经历对我们好吗？键入1表示“是”或0表示“否”

1

exp_good是1

东西搞砸了

Answer 1

因为experience_good永远不会1！它的开始是

experience_good = "yes"

然后在其中途可能更改为

experience_good = sys.stdin.readline()

此时如果用户输入1，变量将保留的是字符串值'1'，而不是1所以你需要

experience_good = int(sys.stdin.readline().strip())

Answer 2

您必须使用==进行int相等测试：

if contact != 0:
    print("Was your experience was us good? Type a 1 for yes or 0 for no")
    experience_good = sys.stdin.readline()
    print("experiencence_good is", experience_good)
    # The above line was just to double check the variable was inputted  correctly
    if experience_good == 1:
        print("Good to hear that.")
    elif experience_good == 0:
        print("Sorry about that. What could we be doing better?")
        doing_better = sys.stdin.readline()
    else:
        print("Stuff's been messed up")

将contact和experience_good投射到int：

contact = int(contact)

experience_good = int(experience_good)

Answer 3

缩进问题（现已编辑）。带上最后一个elif和last else阻止一个缩进向后。

if experience_good == 1:
    print("Good to hear that.")
elif experience_good == 0:
    print("Sorry about that. What could we be doing better?")
    doing_better = sys.stdin.readline()
else:
    print("Stuff's been messed up")

使用==来评估值。当你使用＆＃39;是＆＃39;它会比较对象。不是它的价值。

为什么我的程序会直接进入else阻止，如果它应该进入

3 个答案: