我正在尝试进行数学测验,用两个随机数(1,10)随机选择总和,差异或乘积。我使用z = random.randint(1, 3)
生成总和,差异或产品,但我想使用这个数字转换为“x”,“/”或“+”等符号来显示输出问问题因为我是Python语言的新手而且我是试图学习如何将数字转换为符号。
我的代码在这里:
import random
def askNum():
while(1):
try:
userInput = int(input("Enter a number: "))
break
except ValueError:
print("Incorrect Input!")
return userInput
def askQuestion():
x = random.randint(1, 10)
y = random.randint(1, 10)
z = random.randint(1, 3)
print(" 1 = product \n 2 = sum \n 3 = difference")
print("What is " + str(x)+" " + str(z)+" " + str(y)+"?")
u = askNum()
if z == 1 and u==x*y:
return 1 #product
elif z == 2 and u==x+y:
return 1 #sum
elif z == 3 and u==x/y:
return 1 #difference
else:
return 0
amount = 10
correct = 0
for i in range(amount):
correct += askQuestion()
print("You got %d correct out of %d" % (correct, amount))
现实输出:
dm15125@isu:/u1/work/Python/math> python3 mathquiz.py
1 = product
2 = sum
3 = difference
What is 4 2 6?
Enter a number: 10
1 = product
2 = sum
3 = difference
What is 7 2 6?
Enter a number: 13
1 = product
2 = sum
3 = difference
What is 3 2 3?
Enter a number: 6
1 = product
2 = sum
3 = difference
What is 8 3 4?
Enter a number: 2
1 = product
2 = sum
3 = difference
What is 8 3 10?
Enter a number: 0.8
Incorrect Input!
Enter a number: .8
Incorrect Input!
Enter a number: 0
1 = product
2 = sum
3 = difference
What is 2 2 6?
Enter a number: 8
1 = product
2 = sum
3 = difference
What is 6 3 4?
Enter a number: 1.5
Incorrect Input!
Enter a number: 2
1 = product
2 = sum
3 = difference
What is 7 1 10?
Enter a number: 70
1 = product
2 = sum
3 = difference
What is 9 2 5?
Enter a number: 14
1 = product
2 = sum
3 = difference
What is 5 1 10?
Enter a number: 50
You got 8 correct out of 10
预期产量:
dm15125@isu:/u1/work/Python/math> python3 mathquiz.py
What is 4 + 6?
Enter a number: 10
What is 7 + 6?
Enter a number: 13
What is 3 + 3?
Enter a number: 6
What is 8 / 4?
Enter a number: 2
What is 8 / 10?
Enter a number: 0.8
Incorrect Input!
Enter a number: .8
Incorrect Input!
Enter a number: 0
What is 2 + 6?
Enter a number: 8
What is 6 / 4?
Enter a number: 1.5
Incorrect Input!
Enter a number: 2
What is 7 * 10?
Enter a number: 70
What is 9 + 5?
Enter a number: 14
What is 5 * 10?
Enter a number: 50
You got 8 correct out of 10
在这部分代码中:
print(" 1 = product \n 2 = sum \n 3 = difference")
print("What is " + str(x)+" " + str(z)+" " + str(y)+"?")
而不是str(z)
,定义像ops = ['*', '+', '-']
的列表并使用ops[z - 1]
。 - 1
是因为你的z
从1开始,但是数组索引从零开始。所以你的功能将成为:
def askQuestion():
ops = ['*', '+', '-']
x = random.randint(1, 10)
y = random.randint(1, 10)
z = random.randint(1, 3)
print(" 1 = product \n 2 = sum \n 3 = difference")
print("What is " + str(x) + " " + ops[z - 1] + " " + str(y) + "?")
u = askNum()
if z == 1 and u==x*y:
return 1 #product
elif z == 2 and u==x+y:
return 1 #sum
elif z == 3 and u==x/y:
return 1 #difference
else:
return 0
您可以使用字典来执行此操作:
operators = {
1: "+",
2: "-",
3: "/",
4: "*"
}
operators = operator[z] // where z is the random integer for gettig the operator.
在你的打印声明中
print("What is " + str(x)+" " + str(operator)+" " + str(y)+"?")
您可以在askQuestion函数中使用“if”句子来选择要打印的符号。
或者使用像这样的列表:
symbols_list = ['*','+',' - ']
symbols_list [Z-1]
然后使用“z”值对其进行索引(请记住,第一个位置的索引为0而不是1)。
或者使用带有“z”的字典作为检索适当符号的键:
symbols_dict = {1:'*',2:'+',3:' - '}
symbols_dict [Z]
你可以看到有很多选择,只需选择你喜欢的那个。