分配全局变量V在Python中分配函数属性

Question

我已经找到了两种分配全局变量的方法。

第一种方法为函数指定属性。

第二种方法更改全局变量名称。

我将把它实现为基于文本的冒险游戏。

哪种方法最适合我的任务？为什么？

这是代码。

# Method 1. Assigning attributes to function.

def coin():
    print "You see a coin. Pick it up?"

    choice = raw_input("> ")

    if choice == "yes":
        coin.amount = coin.amount + 1
        print coin.amount
    elif choice == "no":
        print "No monies for you."


# Method 2. Assigning global name within function. 

def coin2():
    global purse
    print "You see a coin. Pick it up?"

    choice = raw_input("> ")

    if choice == "yes":
        purse = purse + 1
        print purse
    elif choice == "no":
        print "No monies for you."

coin.amount = 0
coin()

purse = 0
coin2() 

Answer 1

都不是。将硬币金额作为参数传递，然后返回修改后的值。现在你根本不需要全局或函数属性。

def coin3(amount):
    print "You see a coin. Pick it up?"

    choice = raw_input("> ")

    if choice == "yes":
        amount += 1
        print amount
    elif choice == "no":
        print "No monies for you."
    return amount

x = 0
x = coin3(x)