Hello guys,
Maybe some of you already know, we are trying to adapt our Spacewalk python's
code to version 3.x and in the same time save backward compatibility with
version 2.x. (we have to support Python from version 2.4). Pavel Studenik is
adapting client-side code (rhncfg at this moment) and I server-side. The main
question for me is to extract all version-dependent code into mini-library or
check a version of python in if-clauses and try-except blocks within the code.
Actually I've tried to extract code in a library, but actually, it contained
only few functions and set of data-types and I removed it.
How does it look likes now, for example:
import sys
try:
PY3 = sys.version_info.major >= 3
except AttributeError:
PY3 = False
.
.
.
if PY3:
raise InvalidAction(str(pnf)).with_traceback(sys.exc_info()[2])
else:
raise InvalidAction(str(pnf)), None, sys.exc_info()[2]
At the same moment I can adapt some data-types in the same try-block:
try:
PY3 = sys.version_info.major >= 3
import xmlrpc.client as xmlrpclib
except AttributeError:
PY3 = False
import xmlrpclib
Honestly, I'm not happy with many of this 'if PY3:', and I would like to see
clean and simple code. What advantages and disadvantages do you see for both of
this cases? And If you have any questions you can ask me.
PS Yes, I know about 'six' module, but I'm not sure we will use it.
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