的Python：函数参数和返回值

Question

说我有一个功能

def equals_to(x,y): 
a + b = c 
def some_function(something): 
for i in something: 
... 

有没有办法使用，是由equals_to计算为参数some_function这样

equals_to(1,2) 
some_function(c) 

Answer 1

您需要c方式到return从函数c的值。

def equals_to(x,y): 
    c = x + y   # c = x + y not a + b = c 
    return c   # return the value of c 

def some_function(something): 
    for i in something: 
    ... 
    return 

sum = equals_to(1,2)  # set sum to the return value from the function 
some_function(sum)  # pass sum to some_function 

同样的equals_to的函数签名采用的参数x,y但在功能使用a,b和你的任务是南辕北辙，c需要的x + y值不等于a + bc。

强烈推荐：http://docs.python.org/2/tutorial/