Question

strnumsold = str()
numsold = int()
Flag = False
index = 0
totprice = 0.0
avgsold = 0.0
aboveavg = 0
belowavg = 0
strnumcheck = str()
numcheck = float()


print("Welcome to the Home Sales Calculator!")
print(" _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _")
strnumsold = input("\nHow many homes were sold in the past year? ")
while Flag == False:
    if strnumsold.isdigit():
        numsold = int(strnumsold)
        Flag = True
    else:
        strnumsold = input("That is not a valid number! Try Again!")
Flag = False
tothomes = []
print("\nWhat did the home sell for? (#'s Only) ")
print("**********************************************")
for index in range(numsold):
        tothomes.append(input("{}) $ ".format(index + 1)))
        strnumcheck = tothomes[index]
        if strnumcheck.isdigit():
            numcheck = float(strnumcheck)
            Flag = True
            tothomes[index] = numcheck
        else:
            tothomes[index] = input("That is not a valid number! Try Again! ")
        index = index + 1
        Flag = False
tothomes.sort()
print("**********************************************")
for homes in reversed(tothomes):
    print("   $", "%.2f"%homes)
avgsold = sum(tothomes) / numsold
print("\nThe Average Price of homes sold was: $", "%.2f"%avgsold)
print("The Highest home sold was: ", "%.2f"%max(tothomes))
print("The Lowest home sold was:  ", "%.2f"%min(tothomes))
aboveavg = [above for above in tothomes if above >avgsold]
belowavg = [below for below in tothomes if below <avgsold]
print("The number of homes sold ABOVE Average was: ", len(aboveavg))
print("The number of homes sold BELOW Average was: ", len(belowavg))

这是我的第一个包含列表和数字验证的程序。

我已经发布了我在上面的距离，并且已经多次重写/试图纠正它。

我的号码验证有效，但在提示“再试一次”后再次输入时，它不会完全通过循环并将字符串更改为浮点数。

正确输入数字时，它可以正常工作。以下是给出错误输入时发生的事件的示例：

欢迎使用家庭销售计算器！

How many homes were sold in the past year? 3

What did the home sell for? (#'s Only) 
**********************************************
1) $ 25
2) $ 36
3) $ m
That is not a valid number! Try Again! 24
Traceback (most recent call last):
  File "C:\Users\troythomas448\Desktop\ITCS1140\Assignments\Thomas, Troy Lab#8.3.py", line 37, in <module>
    tothomes.sort()
TypeError: unorderable types: str() < float()

Answer 1

圣牛！得到了它，它是世界上最小的东西！

在我的For循环中，我在If语句中添加了一个额外的While循环。

它仍然无法运行，我在我的Else中意识到我的If语句，我不得不将tothomes [index]切换为strnumcheck。

我展示了我在下面改变的内容：

print("\nWhat did the home sell for? (#'s Only) ")
print("**********************************************")
for index in range(numsold):
    tothomes.append(input("{}) $ ".format(index + 1)))
    strnumcheck = tothomes[index]
    while Flag == False:                          <<<<<<<<<<<<<<<<<<<<<<!
        if strnumcheck.isdigit():
            numcheck = float(strnumcheck)
            Flag = True
            tothomes[index] = numcheck
        else:
            strnumcheck = input                   <<<<<<<<<<<<<<<<<<<<<<!
("That is not a valid number! Try Again! ")
    index = index + 1
    Flag = False

列表和数字验证

1 个答案: