函数中的一个参数不被替换为变量

Question

我有一个函数，我试图通过它传递一个全局变量。函数的其余部分可以工作，但是当yards1<；=0时，userscore仍然==0。你知道吗

我的假设是7被添加到whoScore中，但是我认为whoScore是一个参数，比如x，它将被userscore替换。我正在寻找一种方法，使它这样userscore或oppscore可以放进触地得分功能。你知道吗

我尝试过将参数重命名为一个字母，z.不起作用

我已经打印了whoScore，并且看到事实上，7被添加到whoScore而不是userscore。你知道吗

userscore = 0
oppscore = 0

def runSuccess(text, x, y, whoScore):

    global yards1

    global distance

    global down

    global userscore

    global oppscore

    yardschange1 = random.randint(x, y)
    print(text, "Gain of ", yardschange1, "yards!")
    yards1 -= yardschange1
    down += 1
    distance -= yardschange1
    if yards1 <= 0:
        print("TOUCHDOWN!")
        whoScore += 7
        print("")
        print(whoScore)
        print(userteam, ":", userscore, oppteam, ":", oppscore)

runSuccess("blah", 1, 5, userscore)

我希望userscore替换函数中的whoScore，因为它们在括号中位于同一位置，并且userscore==7。但是，whoScore是通过函数运行的，whoScore==7。你知道吗

Answer 1

如果要更改userscore的全局值，请在if语句的whoScore+=1行下添加userscore=whoScore。通过runSuccess（）获得的“userscore”在函数中被视为whoScore，这意味着它与userscore不同。你知道吗

Answer 2

您需要初始化变量，然后才能使用它。 像这样：

import numpy as np
userscore = 0
oppscore = 0
yards1=0
distance=0
down=0
def runSuccess(text, x, y, whoScore):

  global yards1

  global distance

  global down

  global userscore

  global oppscore

  yardschange1 = np.random.randint(x, y)
  print(text, "Gain of ", yardschange1, "yards!")
  yards1 -= yardschange1
  down += 1
  distance -= yardschange1
  if yards1 <= 0:
      print("TOUCHDOWN!")
      whoScore += 7
      print("")
      print(whoScore)
      print('userteam', ":", userscore, 'oppteam', ":", oppscore)

    runSuccess("blah", 1, 5, userscore)