Newbie inheritance question.

[bwobbones]

Hi all,
 I'm a java programmer struggling to come to terms with python - bear 
with me!

 I'm trying to subclass a class, and I want to be able to see it's 
attributes also.  Here are my classes:

one.py:
*
class one:
   def __init__(self):
   print "one"
   self.testVar = 1
   def printHello(self):
   print "hello"
*
two.py
*
from one import one
class two(one):
   def __init__(self):
   print "two"
   def printTestVar(self):
   print "testVar: " + str(self.testVar)
*
and the driver to make it work:
*
from two import two
class driver:
   def go(self):
   print "driver"
   self.two = two()
   self.two.printHello()
   self.two.printTestVar()
if __name__ == '__main__':
   d = driver()
   d.go()
*
the "self.two.printTestVar()" call doesn't work: shouldn't two.py have 
access to all of it's parents attributes?  In java I would make the 
testVar protected so it's children could see it.  How do I do this in 
python?

Thanks,
Bones
--
http://mail.python.org/mailman/listinfo/python-list

usage of __import__ across two files

[bwobbones]

Hi,
 I'm having trouble making __import__ work with the two classes 
attached. The PrintHello() method can't be seen in the BMTest2 class - 
what am I doing wrong here?


class one - BMTest - in BMTest.py:

import wx
from traceback import print_exc
class ImportTest(wx.Frame):
   def __init__(self):
   wx.Frame.__init__(self, None, -1, "ImportTest",
 size = (666,480), style = wx.DEFAULT_FRAME_STYLE)
   #tb = BMToolBar(self) # works just fine!
   tb = __import__('BMTest2')
   tb2.PrintHello()
class MyApp(wx.App):
   def __init__(self, flag):
   wx.App.__init__(self, flag)
   def OnInit(self):
   frame = ImportTest()
   self.SetTopWindow(frame)
   return True
  
if __name__ == '__main__':
  try:
  app = MyApp(False)
  app.MainLoop()
  except:
  print print_exc()

**
class 2 BMTest2 - in BMTest2.py:
**
import wx
class BMToolBar(wx.ToolBar):
   def __init__(self, parentFrame):
   wx.ToolBar.__init__(self, parentFrame, -1, 
style=wx.TB_HORIZONTAL|wx.NO_BORDER|wx.TB_FLAT|wx.TB_TEXT)
   print "*** gday ***"
   self.Realize()
  
   def PrintHello(self):
   print "Hello"

Any help will be much appreciated!
Bones
--
http://mail.python.org/mailman/listinfo/python-list

re: usage of __import__ across two files

[bwobbones]

Oops,
 Thanks for the reply, but lets try again - I was in a real rush last 
night...and I obviously posted the wrong code.
 I'm trying to use the __import__ form of import because I want to dynamically 
load classes from their .py files.  When I run the BMTest.py file, I get the 
error:
 File "C:\development\BMTest.py", line 10, in __init__
   tb.PrintHello()
 AttributeError: 'module' object has no attribute 'PrintHello'
 It's not recognising that BMTest2 has a PrintHello method!  The shell dir 
function reports this:
import BMTest2
dir(BMTest2)
['BMToolBar', '__builtins__', '__doc__', '__file__', '__name__', 'wx']
tb = __import__('BMTest2')
dir(tb)
['BMToolBar', '__builtins__', '__doc__', '__file__', '__name__', 'wx']
 Am I not defining PrintHello correctly?
 Heres the source again (the proper version this time):
**
class one - BMTest - in BMTest.py:
**
import wx
from traceback import print_exc
#from BMTest2 import BMToolbar
class ImportTest(wx.Frame):
   def __init__(self):
   wx.Frame.__init__(self, None, -1, "ImportTest",
 size = (666,480), style = wx.DEFAULT_FRAME_STYLE)
   #tb = BMToolBar(self) # works just fine!
   tb = __import__('BMTest2')
   tb.PrintHello()
class MyApp(wx.App):
   def __init__(self, flag):
   wx.App.__init__(self, flag)
   def OnInit(self):
   frame = ImportTest()
   self.SetTopWindow(frame)
   return True
   
if __name__ == '__main__':
  try:
  app = MyApp(False)
  app.MainLoop()
  except:
  print print_exc()

**
class two - BMToolBar - in BMTest2.py:
**
import wx
class BMToolBar(wx.ToolBar):
   def __init__(self, parentFrame):
   wx.ToolBar.__init__(self, parentFrame, -1, style=wx.TB_HORIZONTAL|wx.NO_BORDER|wx.TB_FLAT|wx.TB_TEXT)
   print "*** gday ***"
   self.Realize()
   
   def PrintHello(self):
   print "Hello"

 Sorry for the confusion...
Bones

/
/
--
http://mail.python.org/mailman/listinfo/python-list

re: usage of __import__ across two files

[bwobbones]

Thanks Diez,
 Obvious when you put it that way...
--
http://mail.python.org/mailman/listinfo/python-list