Don't understand why I'm getting a NameError for a variable

Question

I have a Tic Tac Toe game in Python, and right now its giving me a weird "Name Error". Here is the error:

NameError: name 'newspace' is not defined

Here is my code:

global newSpace
newSpace = " "

#Check for a win function:
def checkWin(player):
  if player == "X":
    newSpace = "🅧" #🅧
  else:
    newSpace = "🅞" #🅞
  if spaces[0] == player and spaces[1] == player and spaces[2] == player:
    spaces[0] = newspace
    spaces[1] = newspace
    spaces[2] = newspace
    return True
  if spaces[3] == player and spaces[4] == player and spaces[5] == player:
    spaces[3] = newspace
    spaces[4] = newspace
    spaces[5] = newspace
    return True
  if spaces[6] == player and spaces[7] == player and spaces[8] == player:
    spaces[6] = newspace
    spaces[7] = newspace
    spaces[8] = newspace
    return True
  if spaces[0] == player and spaces[3] == player and spaces[6] == player:
    spaces[0] = newspace
    spaces[3] = newspace
    spaces[6] = newspace
    return True
  if spaces[1] == player and spaces[4] == player and spaces[7] == player:
    spaces[1] = newspace
    spaces[4] = newspace
    spaces[7] = newspace
    return True
  if spaces[2] == player and spaces[5] == player and spaces[8] == player:
    spaces[2] = newspace
    spaces[5] = newspace
    spaces[8] = newspace
    return True
  if spaces[0] == player and spaces[4] == player and spaces[8] == player:
    spaces[0] = newspace
    spaces[4] = newspace
    spaces[8] = newspace
    return True
  if spaces[2] == player and spaces[4] == player and spaces[6] == player:
    spaces[2] = newspace
    spaces[4] = newspace
    spaces[6] = newspace
    return True
  return False

I know it's not the most efficient code, but i'm a beginner. In the top, I define newSpace and make it global, so I don't understand why it's giving me this error. Anyone know why? Thanks.

For reference, you can see my whole code here: https://repl.it/@LoveTheBears101/Tic-Tac-Toe . This is from line 1 - 67

Answer 1

区分大小写： newspace != newSpace

Answer 2

只需删除global newSpace ，这里不需要，如果newSpace没有提前声明。

Answer 3

In whole program there no error. But in your example problem is that you use "newSpace" and "newspace" variables. Python is case sensitive.