Django source code interpretation

Question

I was looking at some of the Django source code and came across this . What exactly does: encoding = property(lambda self: self.file.encoding)do?

+5

Highlife May 16 '12 at 6:38

3 answers

. Expanded , 1-1.

def encoding(self):
    return self.file.encoding

+4

Jordan 16 '12 6:50

This is a property that proxies access from the containing class to this file.encoding attribute .

+2

Xorcist May 16 '12 at 6:43

Chris Pratt · Accepted Answer · 2012-05-16T15:45:53+0000

There is nothing wrong with the other two answers, but they can be a bit high. So here is version 101:

lambda

Although this is in their C # documentation, I think Microsoft really has a better explanation of the concept of lambda:

A lambda expression is an anonymous function that can contain expressions and statements

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lambda [argument]: [expression]

[argument] , - [expression] - , , . @Jordan , , , :

def encoding(self):
    return self.file.encoding

self - , , (self.file.encoding) .

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Python OOP . , -, . , Python property "" - . :

def get_foo(self):
    return self.bar

def set_foo(self, value):
    self.bar = value

foo = property(get_foo, set_foo)

, instance.foo ( ) instance.foo = 'something'. , foo .

, , , . encoding file.encoding.