python - 验证字符串输入并将其连接到列表

Question

studentNumber = len(age) - 1
age[studentNumber] = 0
house[studentNumber] = ''
reactionTime[studentNumber] = 0

while True:
  try:
    age[studentNumber] = int(input("What is the age of the student: "))
  except ValueError:
    age[studentNumber] = int(input("What is the age of the student: "))

  if age[studentNumber] in range(12, 17):
    break

house[studentNumber] = input("Which house is the student in (Saturn/Mars): ").lower()
while house[studentNumber] not in {"saturn", "mars"}:
  house[studentNumber] = input("Which house is the student in (Saturn/Mars): ").lower()

age.append(0)
house.append('')
reactionTime.append(0)

print(age + " " + house + " " + reactionTime)

我正在尝试将输入验证为“saturn”或“mars”的字符串，但是TypeError: can only concatenate list (not "str") to list当我尝试将其添加到我的列表时收到错误消息

命令行：

What would you like to do:
1. Enter new information
2. House-based statsitics
3. Specific Criteria statistics
Enter 1 2 or 3:  1
What is the age of the student:  12
Which house is the student in (Saturn/Mars):  saturn
Traceback (most recent call last):
  File "python", line 46, in <module>
  File "python", line 32, in newInfo
TypeError: can only concatenate list (not "str") to list

标签： pythonpython-3.xvalidation

Answer 1

age,house和reactionTime是列表，不能与字符串连接。

您应该压缩三个列表并遍历项目以进行输出。

改变：

print(age + " " + house + " " + reactionTime)

到：

for a, h, r in zip(age, house, reactionTime):
    print(a, h, r)