如何从函数python返回一个int值

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时间:2020-08-19 03:11:25  来源:igfitidea点击:

How to return an int value from a function python

pythonpython-2.7intreturnreturn-value

提问by Pstie

I am really new to Python and found this snippet online that I've modified, right now I have it printing x * y but I want to be able to return it as a int value so I can use it again later in the script.

我真的是 Python 新手,在网上找到了我修改过的这个片段,现在我让它打印 x * y 但我希望能够将它作为 int 值返回,以便我稍后可以在脚本中再次使用它。

I'm using Python 2.7.6.

我正在使用 Python 2.7.6。

def show_xy(event):
    xm, ym = event.x, event.y
    x3 = xm * ym
    print x3
root = tk.Tk()
frame = tk.Frame(root, bg = 'yellow', 
                width = 300, height = 200)
frame.bind("<Motion>", showxy)
frame.pack()

root.mainloop()

Kind regards, Postie

亲切的问候,邮递员

采纳答案by sshashank124

To return a value, you simply use returninstead of print:

要返回一个值,您只需使用return代替print

def showxy(event):
    xm, ym = event.x, event.y
    x3 = xm*ym
    return x3

Simplified example:

简化示例:

def print_val(a):
    print a

>>> print_val(5)
5

def return_val(a):
    return a

>>> result = return_val(8)
>>> print result
8

回答by bAmerang

By using "return" you can return it out of the function. In addition you can specifie the datatype.

通过使用“return”,您可以将其从函数中返回。此外,您可以指定数据类型。

For Example:

例如:

def myFunction(myNumber):
    myNumber = myNumber + 1
    return int(myNumber)

print myFunction(1)

Output:

输出:

2

You can also display the datatype which you got returned out of the function with type()

您还可以使用 type() 显示从函数中返回的数据类型

print type( myFunction(1) )

Output:

输出:

<type 'int'>