[Python-talk] Speaking of oops. How to call a method in another class in another file?

[bruce.labitt at autoliv.com]

I'm plodding along with wxpython.  I mostly have the graphic part set up. 
Now I am trying to connect the display to bits of my program.  The first 
bit is to plot an existing data file.  I used filepicker to get the full 
file name.  I don't quite understand how to invoke/use one of the methods 
that I created in the class Xambig.

Xambig is in the file genwave.py.  Inside of Xambig is a method named 
plotMe. 

class Xambig:

        def __init__(self):
                blah
 
        def generateWaveform(self):
        def runEngine(self):

        def plotMe(self, mypath, myrange):
                """Reads binary file in mypath.  Generates surface plot 
using mayavi. 
                Range is restricted to myrange.
                """

MyForm is inside the file mygui1.py.  MyForm is the main app.

import wx
import string, os
import genwave

class MyForm( wx.Frame, genwave.Xambig ):
        def __init__(self, log, imgfile):
                self.log = log
                wx.Frame.__init__(self, None, -1, 'Frame Title')
                self.idlecnt = 0
                self.D = {  a whole lot of stuff ... }
                lots o stuff. events, binding, etc.

        def onOK(self, event):
                """The user has pressed the Start Button.  Read the log 
and update the
                dictionary.  If the user has previously selected, 'Plot 
existing' then plot the
                datafile.  The datafile name is stored in the dictionary 
and must be
                retrieved
                """
                self.log.seek(0)                        # rewind log file 
pointer
                logList = self.log.readlines()  # read log file
                for myline in logList:
                        readkey = myline.split(', ')[0]
                        readval = myline.split(', ')[1]
                        self.D[readkey] = readval       # overwrite 
initial dictionary with log results

                myrange = 150
                filepath = self.D.get("Datafile Path")  # get file path
                plot = self.D.get("Plot Selection")             # get the 
selection

                if ( plot =="Plot existing"):
                        p = genwave.Xambig()
                        plotme(p, filepath, myrange)  ??? 
 

Runtime error is NameError: global name 'plotme' is not defined.  Looking 
for answers in the vast internet have not yielded too much.  I hope this 
is simple.  Rick Werme's example code is great, but I couldn't infer what 
to do from it.  I learned a lot from doing this, but apparently not quite 
enough yet.

Anyone got a suggestion?  Besides "Step away from the terminal Sir"!  This 
has been quite a good learning experience overall.  I'm pleased with the 
overall project to date.

Bruce Labitt
Autoliv Electronics
1011B Pawtucket Blvd, PO Box 1858
Lowell, MA  01853

Email: bruce.labitt at autoliv.com. 
Tel:  (978) 674-6526
Fax: (978) 674-6581 

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