Python def语句参数调用

Question

def rec():
usr = input('Enter Name : ')
pwd = input('Enter Password : ')
return usr , pwd
def show():
c = rec()
print(c.usr , c.pwd)
show()

——错误打印(c。用户，c.pwd)AttributeError: 'NoneType'对象没有属性'usr'

这只是一个例子，我想知道我们如何将一个def函数的值传递给另一个def函数，就像我在defrec()中获取值并在def show()中显示值ps:你能告诉我如何在评论中做到这一点，因为我只是初学者，提前感谢

Answer 1

你可以这样做，但要做到这一点，你需要从你调用的函数返回一些东西。

def rec():
usr = input('Enter Name : ')
pwd = input('Enter Password : ')
return 10 # just an example to show that you need to return something here so that `c` can receive that value
def show():
c = rec() # `c` will receive the value that you return from `rec()`
print(c.usr , c.pwd)

show()

对于你的问题，代码应该是这样的:

def rec():
usr = input('Enter Name : ')
pwd = input('Enter Password : ')
return usr, pwd  # you returned two values
def show():
c, d = rec()  # as you returned two values, you also need to receive them
print(c , d)  # you values are in `c` and `d`, and there is nothing like `c.usr` here, so use only `c` and `d`

show()

输出:

Enter Name : shahin
Enter Password : 123
shahin 123