[Tutor] Proxies/Interceptors for file-like objects

[Emile van Sebille]

Oxymoron wrote:
> I'm trying to intercept one or more methods in file-like objects 

Shadowing perhaps?

 >>> class open(open):
...     def mything(self):
...         print "it's my thing"
...
 >>> a = open(r'c:\testfile','wb')
 >>> a.mything()
it's my thing
 >>> a.write("this is a test")
 >>> a.flush()
 >>> a.close()
 >>> open(r'c:\testfile','r').read()
'this is a test'
 >>>


Emile