Python字符串到属性 [英] Python string to attribute

问题描述

如何才能实现这样的任务：

How can I achieve such job:

def get_foo(someobject, foostring):
    return someobject.foostring

IE：

如果我这样做 get_foo（OBJ，名）应该叫 obj.name （见输入作为字符串，但我把它作为一个attritube。

if I do get_foo(obj, "name") it should be calling obj.name (see input as string but I call it as an attritube.

感谢

推荐答案

使用内建的功能 GETATTR

getattr(...)
    getattr(object, name[, default]) -> value

    Get a named attribute from an object; getattr(x, 'y') is equivalent to x.y.
    When a default argument is given, it is returned when the attribute doesn't
    exist; without it, an exception is raised in that case.

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