My python loop is either freezing up or running once-CodePudding

The purpose of this program is to have a user input numbers until they enter done, at which point the program outputs the maximum & minimum numbers. If the user enters something that is not a number, the program says "invalid input" and skips to the next time the loop runs. I have a try/except as well. This program is written in Python 3. when I run without the continue at the bottom, my screen freezes & I have to restart. With it, I get a pop-up saying SyntaxError: bad input on line 25.

        largest = 0
        largest = float(largest)
        smallest = 0
        smallest = float(smallest)
        num = input('Enter a number: ')
        num = float(num)
        while True:
          if num == "done":
                break
            try:
                float(num)
            except:
                print('Invalid Input')
                continue
            if num > largest:
                largest = num
     
           if smallest == 0:
                smallest= num
    
            if smallest > num:
               smallest = num
            print(num)
            continue
        print("Maximum is", largest)
        print("Minimum is", smallest)

CodePudding user response：

Your input is outside of your loop so it only asks once and since it doesn't ever change its value to "done", it loops forever.

largest = 0
largest = float(largest)
smallest = 0
smallest = float(smallest)
# num = input("Enter a number: ")

while True:
    num = input("Enter a number: ")
    if num == "done":
        break
    try:
        num = float(num)
        float(num)
    except:
        print("Invalid Input")
        continue
    if num > largest:
        largest = num

    if smallest == 0:
        smallest = num

    if smallest > num:
        smallest = num
    print(num)
    continue

print("Maximum is", largest)
print("Minimum is", smallest)