En Fri, 09 Apr 2010 13:10:44 -0300, Alex Hall <[email protected]> escribió:
c:\Python26>python.exe i:\arm\main.pyw
Traceback (most recent call last):
File "i:\arm\main.pyw", line 3, in <module>
import arm, network, weather, dict
File "i:\arm\arm.py", line 4, in <module>
import config
File "i:\arm\config.py", line 4, in <module>
from main import exitProgram
File "i:\arm\main.pyw", line 3, in <module>
import arm, network, weather, dict
File "i:\arm\network.py", line 4, in <module>
arm.ready()
AttributeError: 'module' object has no attribute 'ready'
I realize it may be odd to import from main.pyw, but I do not think
that could be causing the problem... could it?
Yes, it *is* a problem. Note the traceback sequence: main imports arm, arm
imports config, config imports arm *again* (which is only partially
initialized), arm imports network, and network tries to use arm.ready and
fails.
Try to organize your modules hierarchically, so modules higher in the
hierarchy may import (and use) other modules lower in the hierarchy, but
not the other way around.
Doing it that way helps also to make clear the intent of each module (and
class).
The 'main' script should be at the top of the hierarchy: 'main' may import
anything, but no one may import 'main'. Put your high-level modules below
it; they may use other low-level ones.
--
Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list
