我已经定义了一个类来处理文件但是当我尝试实例化类并传递文件名时会收到以下错误.让我知道会出现什么问题？
>>> class fileprocess:
... def pread(self,filename):
... print filename
... f = open(filename,'w')
... print f
>>> x = fileprocess
>>> x.pread('c:/test.txt')
Traceback (most recent call last):
File "", line 1, in
TypeError: unbound method pread() must be called with
fileprocess instance as first argument (got nothing instead)