Author: guido.van.rossum
Date: Wed Aug 22 20:14:10 2007
New Revision: 57277
Modified:
python/branches/py3k/Lib/io.py
Log:
Make IOBase (and hence all other classes in io.py) use ABCMeta as its metaclass,
so you can use their class .register() method to register virtual subclasses.
Modified: python/branches/py3k/Lib/io.py
==============================================================================
--- python/branches/py3k/Lib/io.py (original)
+++ python/branches/py3k/Lib/io.py Wed Aug 22 20:14:10 2007
@@ -31,6 +31,7 @@
"BufferedRandom", "TextIOBase", "TextIOWrapper"]
import os
+import abc
import sys
import codecs
import _fileio
@@ -178,7 +179,7 @@
pass
-class IOBase:
+class IOBase(metaclass=abc.ABCMeta):
"""Base class for all I/O classes.
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