redundant importr

[max(01)*]

Peter Hansen wrote:
> max(01)* wrote:
> 
>> Peter Hansen wrote:
>>
>>> Not required except for performance reasons.  If the .pyc
>>> files don't exist, the .py files are recompiled and the
>>> resulting bytecode is simply held in memory and not cached
>>> and the next startup will recompile all over again.
>>
>>
>> but the other files *are* compiled, right? 
> 
> 
> Yes, definitely.  I did say that.
> 
>> so the initial question remains unanswered: 
> 
> 
> No it doesn't.  I thought I was clear, but I can reword
> it for you: the files are compiled *in-memory* and the
> results are never written to disk.
> 
>  > *if* they are compiled, where are they put, if the
> 
>> corresponding *.py files are on a non-writeable directory?
> 
> 
> They are not put anywhere.  Compilation is a process
> by which the source is converted to executable bytecodes.
> This says nothing about where either the source or the
> compiled result resides.  The actual compilation works
> on a long series of bytes in memory, and the result is
> just another long series of bytes.  Nothing requires that
> either of these things are even stored in a file.

ok, maybe it is an implementation-dependent issue after all.

i am working on a debian woody platform with the standard python2.3 package.

consider this:

max2 at 172.17.1.201:~/tmp/import-enigma$ ll
total 8
-rw-r--r--    1 max2     max2           36 2005-04-02 17:44 imported.py
-rw-r--r--    1 max2     max2           33 2005-04-02 17:44 importer.py
max2 at 172.17.1.201:~/tmp/import-enigma$ cat importer.py
import imported
imported.fun_1()
max2 at 172.17.1.201:~/tmp/import-enigma$ cat imported.py
def fun_1():
   print "I am fun_1()"
max2 at 172.17.1.201:~/tmp/import-enigma$ python importer.py
I am fun_1()
max2 at 172.17.1.201:~/tmp/import-enigma$ ll
total 12
-rw-r--r--    1 max2     max2           36 2005-04-02 17:44 imported.py
-rw-r--r--    1 max2     max2          307 2005-04-02 17:45 imported.pyc
-rw-r--r--    1 max2     max2           33 2005-04-02 17:44 importer.py
max2 at 172.17.1.201:~/tmp/import-enigma$

see?

bye

macs