從另一個範圍更改變量而不使用全局？

Question

我是Python新手。

我怎麼能做到這樣的事：

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 

我所使用全局變量的實際代碼：

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 

我怎樣才能做到這一點（訪問和來自otherfunc改變currentNum）未做currentNum全球？

Answer 1

如果你想訪問currentNumotherfunc你應該把它傳遞給該函數。如果你想otherfunc來改變它，只需讓它返回一個更新的版本。試試這個代碼：

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