What I want is if we allow both Python 1.5 _and_ Python 2.0 to be installed simultaneously we also must allow to actually use both at the same time. I want to do both #python15 -c "import sys" and #python20 -c "import sys" Or, I want to switch my alternative settings for the Python interpreter from 2.0 to 1.5 and in this case I want all python applications to work like before, but with the changed Python interpreter.
So we need 1) a directory where all source .py modules are put into, for example /usr/lib/pythonsrc. In this directory we have subdirs for a) compatible source for 1.5 and 2.0 b) only 1.5, not 2.0 c) only 2.0, not 1.5 2) a directory where all compiled .py[co] modules are put into, for example /usr/lib/python. In this directory we have subdirs for a) compiled bytecode for 1.5 b) compiled bytecode for 2.0 Whats the good thing about this: Python applications put their source into /usr/lib/pythonsrc. Then they compile for all available Python interpreters (for example 1.5 and 2.0) and put the compiled files in /usr/lib/python/x.x This way all applications work with all installed Python interpreters, they dont need wrapper scripts (but an application that works on Python 2.0 only has to call the /usr/bin/python20 interpreter of course). And a final thought: why dont we replace Python 1.5.2 with 2.0 and save us all this hassle with Python versions? I dont think that there are Python apps that only work on 1.5, but not on 2.0. Bastian Kleineidam
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