Newbie packages Q

[Steve Holden]

MarkyMarc wrote:
> Hi All,
> 
> I do not understand the packages system in python. I have read this
> http://docs.python.org/tut/node8.html a 100 times and I can not get it
> to work.
> 
> I make a test app like this:
> *******************************
> Test/
>       __init__.py (a empty file)
>       apack/
>                __init__.py (a empty file)
>                atest.py
>       bpack/
>                __init__.py (a empty file)
>                btest.py
> *******************************
> atest.py:
> from Test.bpack import btest
> 
> def printA():
> 	print "This is Atest from Apack"
> 
> def printbtest():
> 	print btest.printB()
> 
> print printA()
> print printbtest()
> *******************************
> btest.py:
> from Test.apack import atest
> 
> def printB():
> 	print "This is Btest from Bpack"
> 
> def printatest():
> 	print atest.printA()
> 
> print printatest()
> *******************************
> 
> All I get is an import error: ImportError: cannot import name x
> 
> I can remove the import statements an use the Test package quit normal
> but when I try to make intra-pacage references I get the import error.
> 
> I must be missing something, could any one point me at what.
> 
> Thank you.
> 
Would it hep to observe that the atest and btest submodules attemot to 
import each other?

There is no reason I can see for apack and bpack to be subpackages. Why 
not just rename atest.py as apack.py at the same level as the Test 
package's __init__.py, and in the same way make btest.py bpack.py.

Then the __init__.py can do:

from apack import printA
from bpack import printB

and your main program can do

import Test
Test.printA(...)

regards
  Steve
-- 
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Sorry, the dog ate my .sigline so I couldn't cat it