Get variable from another class

[Golfball2k6]

Very new to Python and programming in general. I've watched videos and read tutorials about class variables, but I can't get it through my head how to make "selection" from FileType available in coordpick:

Would appreciate some help!

import arcpy import pythonaddins class FileType(object): """Implementation for pasdamappa_addin.filetype (ComboBox)""" def __init__(self): self.items = [".tif", ".jp2", ".sid"] self.editable = False self.enabled = True def onSelChange(self, selection): coordpick.enabled = True print selection class coordpick(object): """Implementation for pasdamappa_addin.coordpick (Tool)""" def __init__(self): self.enabled = False self.shape = 'NONE' # Can set to "Line", "Circle" or "Rectangle" for interactive shape drawing and to activate the onLine/Polygon/Circle event sinks. def onMouseDownMap(self, x, y, button, shift): print str(x)[:3] + str(y + 10000)[:2] + selection

[ichabod801]

First of all, selection isn't in FileType. You don't save it as an instance attribute in onSelChange. You would probably want to initialize it to a null value as well:

class FileType(object): """Implementation for pasdamappa_addin.filetype (ComboBox)""" def __init__(self): self.items = [".tif", ".jp2", ".sid"] self.editable = False self.enabled = True self.selection = None # initialize to None def onSelChange(self, selection): coordpick.enabled = True self.selection = selection # save the value as an instance attribute.

Once you have an instance, you can get the attribute with the dot operator:

>>> ft = FileType() >>> ft.onSelChange('spam') >>> ft.selection 'spam'