是否可以在“地理处理结果”窗口中显示从自定义例外引发的打印语句?
我修改了一个脚本,发现该脚本从用户处获取两个输入,找到关联的功能,然后缩放到该功能。该工具工作正常。我试图通过自动格式化输入以使其具有正确数量的字符来使其更加用户友好。我添加了一个消息框,告知用户输入框中是否有太多字符,但是我使用easygui创建了该消息框(用于GUI的Python库)。相反,我想使用gp结果窗口显示消息。我以为我正确设置了raise和except语句的格式,但是该工具运行并且得到完整的结果,而不是错误消息。我尝试了esri的arcpy帮助,但没有得到我想要的结果。
class BadInputError(Exception):
pass
# Import arcpy module
import arcpy, sys, string
from arcpy import env
try:
def checkInput(inp):
mNCount = len(inp)
trigger = 0
while trigger == 0:
if mNCount == 4:
trigger = 1
elif mNCount > 4:
inp = ''
trigger = -1
raise BadInputError
elif mNCount == 3:
inp = '0' + inp
trigger = 1
elif mNCount == 2:
inp = '00' + inp
trigger = 1
elif mNCount == 1:
inp = '000' + inp
trigger = 1
return inp
# Script arguments
MapNumber = arcpy.GetParameterAsText(0)
MapNumber = checkInput(MapNumber)
ParcelNumber = arcpy.GetParameterAsText(1)
ParcelNumber = checkInput(ParcelNumber)
Expression = (""" "MAP" = '%s' AND "PARCEL" = '%s'""") %(MapNumber,ParcelNumber)
# Local variables:
GISData_GISDATA_CAD_PARCEL2009_WHOLE = "Database Connections\\GISUser.sde\\GISData.GISDATA.CAD_PARCEL2009_WHOLE"
Output_Layer_Name = Expression
Output_Layer = "ParcelSelection"
# Process: Select Layer By Attribute
arcpy.SelectLayerByAttribute_management("2009 Parcel Points", "NEW_SELECTION", Expression)
# Zoom to Selected Features
mxd = arcpy.mapping.MapDocument('CURRENT')
df = arcpy.mapping.ListDataFrames(mxd, "Layers") [0]
df.zoomToSelectedFeatures()
df.scale = 8000
arcpy.RefreshActiveView()
except BadInputError:
print "Too many characters. Run again"
except Exception, e:
# If an error occurred, print line number and error message
import traceback, sys
tb = sys.exc_info()[2]
print "Line %i" % tb.tb_lineno
print e.message