按名称初始化类对象

如果该类在您的范围内:

get_class = lambda x: globals()[x]

getattr :

import urllib2
handlerClass = getattr(urllib2, 'HTTPHandler')

你听说过 inspect module

退房 this snippet 我发现了。

我想你的反省 http://en.wikipedia.org/wiki/Reflection_%28computer_science%29#Python

或者德国维基百科上的一个更好的例子:

>>> # the object
>>> class Person(object):
...    def __init__(self, name):
...        self.name = name
...    def say_hello(self):
...        return 'Hallo %s!' % self.name
...
>>> ute = Person('Ute')
>>> # direct
>>> print ute.say_hello()
Hallo Ute!
>>> # Reflexion
>>> m = getattr(ute, 'say_hello')()
>>> # (equals ute.say_hello())
>>> print m
Hallo Ute!

从 http://de.wikipedia.org/wiki/Reflexion_%28Programmierung%29#Beispiel_in_Python