Arcpy GetMessages in PythonWin

Question

I'm a beginner to Python coding and now working on a basic script program, where I'm using both Print and arcpy.AddMessage/arcpy.AddError in a standalone script for ArcMap or in Pythonwin. However, I'm having issues with how I can do this for arcpy.GetMessages in PythonWin to find a traceback error.

I tried using:

msgs = arcpy.GetMessages(2)
print (msgs)
arcpy.AddMessage(msgs)

But couldn't get any traceback message. Is there a code that helps show the traceback error in Pythonwin?

Full Script below:

import arcpy
from arcpy import env
from arcpy.sa import *
arcpy.env.overwriteOutput = True try:
    # Sets the workspace evironment settings.
    env.workspace = "E:/College/Penn State/GEOG 485/Lesson 1/Lesson1"  
    inRaster = "foxlake"
    contourInterval = 25
    baseContour = 0
    outContours = "E:/College/Penn State/GEOG 485/Lesson 1/Lesson1/ContourFoxLake.shp"     arcpy.CheckOutExtension("Spatial")     arcpy.sa.Contour(inRaster, outContours, contourInterval, baseContour)       # Report a success message
    print "Contour creation successful!"
    arcpy.AddMessage("Contour creation successful!") except:
    # Report an error message
    print "Failed to create the contour."
    arcpy.AddError("Failed to create the contour.")
    
    # Report any error messages that the Contour tool might have generated
    msgs = arcpy.GetMessages(2)
    print (msgs)
    arcpy.AddMessage(msgs)

DanPatterson_Retired · Accepted Answer

As a note... if you take everything out of a try except block, you will get an error message which is largely the same as would be returned otherwise. I quite using try except blocks a long time ago... especially in cases where you only want to get the traceback messages rather than 'do' something else on failure. From notes I made a long time agoo Script variantsOutputA very simple script, with an obvious error. # version 1
print(something)
( IDE dependent message.... ) File "Path_to_script\script_name.py", line 1, in     print(something) NameError: name 'something' is not defined As above, but getting smarter. # version 2
try:
    print(something)
except:
    print("ooops")
>>> ooopsLets bring out the tools and see if that helps. # version 3
import sys
import traceback
try:
    print(something)
except:
    exc_traceback = sys.exc_info()
    print(traceback.print_exc())
>>> Traceback (most recent call last): File "Path_to_script\script_name.py", line 5, in     print(something) NameError: name 'something' is not defined None You can draw your own conclusions which is the most useful