我这测试没问题...
Python 3.3.2 (v3.3.2:d047928ae3f6, May 16 2013, 00:06:53) [MSC v.1600 64 bit (AMD64)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> f = open('d:/test.txt','r',encoding='utf-8')
>>> s = f.read()
>>> v = eval(s)
>>> v
{'hello world', '测试'}
>>>