为什么我的代码在我的电脑上不起作用，但在其他人身上？

Question

When I run this code it asks me for inputs. But when I input for instance y , it gives me an objectnotfound error, and when I input h , it gives me some list which is longer than the entirety of code.

I tried sending this code to someone else in the Python discord and it seemed like it worked for them.

def average() -> float:
    nums = []
    while True:
        try:
            nums.append(float(input('')))
        except ValueError:
            return sum(nums) / len(nums)

When I input y :

PS C:\Users\NPC> 7
7
PS C:\Users\NPC> 5
5
PS C:\Users\NPC> 1
1
PS C:\Users\NPC> 51.56
51,56
PS C:\Users\NPC> y
y : The term 'y' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ y
+ ~
    + CategoryInfo          : ObjectNotFound: (y:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException

When I input h :

PS C:\Users\NPC> 6
6
PS C:\Users\NPC> 62.32
62,32
PS C:\Users\NPC> 5123.412
5123,412
PS C:\Users\NPC> h

  Id CommandLine
  -- -----------
   1 & C:/Users/NPC/AppData/Local/Programs/Python/Python38-32/python.exe "c:/Users/NPC/Desktop/python projects/arithm...
   2 & C:/Users/NPC/AppData/Local/Programs/Python/Python38-32/python.exe "c:/Users/NPC/Desktop/python projects/arithm...
   3 & C:/Users/NPC/AppData/Local/Programs/Python/Python38-32/python.exe "c:/Users/NPC/Desktop/python projects/arithm...
   4 & C:/Users/NPC/AppData/Local/Programs/Python/Python38-32/python.exe "c:/Users/NPC/Desktop/python projects/arithm...
   5 & C:/Users/NPC/AppData/Local/Programs/Python/Python38-32/python.exe "c:/Users/NPC/Desktop/python projects/arithm...
   6 & C:/Users/NPC/AppData/Local/Programs/Python/Python38-32/python.exe "c:/Users/NPC/Desktop/python projects/arithm...
   7 4
   8 5
   9 6
  10 y
  11 & C:/Users/NPC/AppData/Local/Programs/Python/Python38-32/python.exe "c:/Users/NPC/Desktop/python projects/arithm...
  12 6
  13 5
  14 34
  15 h
  16 & C:/Users/NPC/AppData/Local/Programs/Python/Python38-32/python.exe "c:/Users/NPC/Desktop/python projects/arithm...
  17 y
  18 & C:/Users/NPC/AppData/Local/Programs/Python/Python38-32/python.exe "c:/Users/NPC/Desktop/python projects/arithm...
  19 5
  20 2
  21 5
  22 d
  23 5
  24 2
  25 5
  26 print(nums)
  27 & C:/Users/NPC/AppData/Local/Programs/Python/Python38-32/python.exe "c:/Users/NPC/Desktop/python projects/arithm...
  28 4
  29 5
  30 6
  31 y
  32 & C:/Users/NPC/AppData/Local/Programs/Python/Python38-32/python.exe "c:/Users/NPC/Desktop/python projects/arithm...
  33 7
  34 5
  35 1
  36 51.56
  37 y
  38 & C:/Users/NPC/AppData/Local/Programs/Python/Python38-32/python.exe "c:/Users/NPC/Desktop/python projects/arithm...
  39 6
  40 62.32
  41 5123.412

I'm using the latest 32 bit release of Visual Studio Code on a 32 bit Windows 10 Pro. I also tried that code in Python IDLE, this didn't seem to work as well.

Answer 1

You're defining a function but not calling it, so when you run your code it finishes running before you type anything. Your input it being sent directly to PowerShell, not to your program.

Add this to the bottom of your script:

average()

As others have pointed out, in your except branch you return your result instead of print ing it. You probably want to print(sum(nums) / len(nums)) instead.

I also strongly suggest adding a text prompt to more easily distinguish between your program and your shell, eg

float(input('Please enter a number: '))