从另一个范围更改变量而不使用全局？

Question

我是Python新手。

我怎么能做到这样的事：

def gameon(): 
    currentNum = 0 
    for x in range(100): 
    currentNum+=1 
    otherfunc() 

def otherfunc(maybe a possible parameter...): 
    for y in range(500): 
    #check for some condition is true and if it is... 
    #currentNumFROMgameon+=1 

我所使用全局变量的实际代码：

def gameon(): 
    global currentNum 
    currentNum = 0 
    for x in range(100): 
    currentNum+=1 
    otherfunc() 

def otherfunc(): 
    global currentNum 
    for y in range(500): 
    if(...): 
     currentNum+=1 
global currentNum 

我怎样才能做到这一点（访问和来自otherfunc改变currentNum）未做currentNum全球？

Answer 1

如果你想访问currentNumotherfunc你应该把它传递给该函数。如果你想otherfunc来改变它，只需让它返回一个更新的版本。试试这个代码：

def gameon(): 
    currentNum = 0 
    for x in range(100): 
    currentNum+=1 
    currentNum = otherfunc(currentNum) 

def otherfunc(currentNumFROMgameon): 
    for y in range(500): 
    if True: # check your condition here, right now it's always true 
     currentNumFROMgameon+=1 
    return currentNumFROMgameon