属性查找str和诸如object.myvar之类的对象 [英] attribute lookup str and objects like object.myvar

问题描述

我想知道如何使用变量连接对象字段，很难向我解释，让我举个例子

I want to know how i can concat object fields with a variable, it's hard to explain to me, let me give an example

示例：

我的对象有：

myobject.name = 'Red'
myobject.lastname = 'Foo'

我有一个像这样的函数：

and I have a function like this:

my function
..........
some_dumb_field = name

print myobject.some_dumb_field

这崩溃了，我如何像对象一样连接字段的str？

And this crashes!, how can i concat the str of the field like an object?

推荐答案

我猜您正在寻找 getattr ：

print getattr(myobject, some_dumb_field)

这将查找 myobject 其名称由字符串 some_dumb_field 给出。

This will look up the attribute of myobject whose name is given by the string some_dumb_field.

例如，

getattr(myobject, 'name')

等价于

myobject.name

（警告：这可以称为属性查找；您将无法在 concat一词下找到它。）

(Warning: This could be called attribute lookup; you won't find it under the term "concat".)

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