AddWarning

Summary

Adds a warning message (severity of 1) to the messages of a script tool or Python toolbox tool.

When a tool is run, a warning message can be accessed from the Geoprocessing pane, the geoprocessing history, and the list of messages when a tool is called from Python.

Syntax

AddWarning (message)

Parameter	Explanation	Data Type
message	The warning message.	String

Code sample

AddWarning example

Add a warning message to a Python script tool.

import arcpy

fc = arcpy.GetParameterAsText(0)

# Get the count from GetCount's Result object
feature_count = int(arcpy.GetCount_management(fc).getOutput(0))

if feature_count == 0:
    arcpy.AddWarning("{0} has no features.".format(fc))
else:
    arcpy.AddMessage("{0} has {1} features.".format(fc, feature_count))