如果答案错误，我希望显示所有操作员的预设信息。
也许是这样的：
for但是在#Imports
import random
from time import sleep
#List & Definitions#
operators = ("-","+","X")
score = 0
QA = 0
#Intro#
print ("Hello and Welcome")
print ("What is your name?")
name = input ()
print ("Do you want to Play (Yes/No)?")
choice = input()
if choice =="Yes":
print ("Excellent")
if choice == "No":
print ("Okey, bye...")
end()
quit()
print ("Please input your class")
cn = input ()
print ("Let's start the quiz!")
sleep(2)
#Asking Questions
for QA in range (0, 10):
numb1 = random.randint(1,10)
numb2 = random.randint(1,10)
randOp = random.choice(operators)
#Addition
if randOp == "+" :
print (str(numb1) + "+" + str(numb2))
answer = numb1 + numb2
print ("Please input your answer")
UserAns = int(input ())
if UserAns == answer :
print ("well done that was correct")
score = score + 1
if UserAns != answer:
print("that's wrong")
else:
print ("Oops! That was no valid number. Try again...")
#Subtracting
if randOp == "-" :
if numb2 > numb1 :
print (str(numb2) + "-" + str(numb1))
answer = numb2 - numb1
print ("Please input your answer")
UserAns = int(input ())
if UserAns == answer :
print ("woah again Correct")
if UserAns != answer:
print("that's wrong")
score = score + 1
elif numb1 > numb2 :
print(str(numb1) + "-" + str(numb2))
answer = numb1 - numb2
print ("Please input your answer")
UserAns = int(input ())
if UserAns == answer :
print ("Correct :) ")
score = score + 1
if UserAns != answer:
print("that's wrong")
#Multiplication
if randOp == "*" :
print (str(numb1) + "X" + str(numb2))
ans = numb1 * numb2
sleep(1)
print ("Please input your answer")
UserAns = int(input ())
if ans == UserAns :
print ("Correct")
score = score + 1
if UserAns != answer:
print("that's wrong")
#Displaying Score
QA = QA + 1
if QA == 10 :
print ("Your score is " + str(score) + " out of ten")
#Saving & Writing to File
savePath = "Results\Class " + str(cn) + "\\" + name.lower() +".txt"
file = open(savePath, "a")
file.close()
file = open(savePath, "r")
if file.read() == "":
file.close()
file = open(savePath, "a")
file.write(name + "\n\n")
file.close()
file.close()
file = open(savePath, "a")
file.write(str(score))
file.write("\n")
file.close()
循环中。
我的目标是提出数字问题，然后保存到文件中。
首先，我需要询问用户他们所在的数学课程，然后询问10个随机生成的问题。
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答案 0 :(得分：2)
只需制作更好的输入功能..
def input_with_choices(prompt, choices):
while True:
choice = input('{} (choices are: {}) '.format(prompt, ','.join(choices)))
if choice in choices:
return choice
else:
print("That's not a valid choice.")
和
def input_int(prompt):
while True:
try:
return int(input(prompt))
except ValueError:
print("That's not an integer.")
等
然后您可以使用它们来验证for循环中的输入。
答案 1 :(得分：0)
您的问题不是很容易理解，但我认为您正在寻找的是：
accepted = False
while not accepted:
try:
UserAns = int(input())
accepted = True
except:
pass