ArcPy Python Addin Combobox How to leave a if-loop, when selection is found

Question

ArcPy Combobox How to leave a if-loop, when selection is found

I developed a Combox which:

1. combines values from different featurelayers
2. the User can select an ID or activitycode (acode)
3. the active view zooms to the object (biotop or Protected Area)

The Combobox works very slow. Populating the Combobox with the values goes quite quick. But the zoom to the selected features is very slow. The problem is, that the if-loop, iterates through all featureclasses. I don't know how to leave the if-loop, when the selected feature is found. Currently it loops throgh the end of all tables of the listed featureclasses no matter if the selection already is found.

import sys, os, arcpy, zipfile, traceback, pythonaddins
from arcpy import mapping, env
class SiteComboBoxClass43(object):
 """Implementation for Site_Python_Addins_addin.combobox (ComboBox)"""
 def __init__(self):
 self.items = []
 self.editable = True
 self.enabled = True
 self.dropdownWidth = 'WWWWWWWWW'
 self.width = 'WWWWWWWWW'
 def onFocus(self, focused):
 if focused:
 self.mxd = arcpy.mapping.MapDocument('current')
 global items, site, akode, fc_biotop_pol, fc_biotop_poi, fc_biotop_li, fc_pro1_pol, fc_pro1_poi, fc_pro1_li
 items = []
 fields_site = "SITE_ID"
 akode = "AKODE"
 fc_biotop_pol = "Biotop (Polygon)"
 fc_biotop_poi = "Biotop (Point)"
 fc_biotop_li = "Biotop (Line)"
 fc_pro1_pol = "Protection Area 1 (Polygon)"
 fc_pro1_poi = "Protection Area 1 (Point)"
 fc_pro1_li = "Protection Area 1 (Line)"
 # build lists and populate the Combobox with sorted values
 fcsites1 = [fc_biotop_pol, fc_biotop_poi, fc_biotop_li, fc_pro1_pol, fc_pro1_poi, fc_pro1_li]
 fcakode1 = [fc_pro1_pol, fc_pro1_poi, fc_pro1_li]
 for x in fcsites1:
 for row in arcpy.da.SearchCursor(x,fields_site): items.append(row[0])
 for x in fcakode1:
 for row in arcpy.da.SearchCursor(x,akode): items.append(row[0])
 self.items = sorted(items) 
 pass
 def onSelChange(self, selection):
 combobox.enabled = True
 self.value = selection
 self.mxd = arcpy.mapping.MapDocument('current')
 self.df = arcpy.mapping.ListDataFrames(self.mxd)[0]
 # looking for the selected ID or code in the attributetable
 if len(selection) > 8:
 fcsites2 = [fc_biotop_pol, fc_biotop_poi, fc_biotop_li, fc_pro1_pol, fc_pro1_poi, fc_pro1_li]
 for x in fcsites2:
 arcpy.SelectLayerByAttribute_management(x, "NEW_SELECTION", fields_site + "='" + selection + "'")
 else:
 fcakode2 = [fc_pro1_pol, fc_pro1_poi, fc_pro1_li]
 for x in fcakode2:
 arcpy.SelectLayerByAttribute_management(x, "NEW_SELECTION", akode + "='" + selection + "'")
 # zoom to Selection
 self.df.zoomToSelectedFeatures()
 self.df.scale = 15000
 pass

• FelixIP: Use FIDset property of Describe object, and break the loop when length of it >0
• Franziska0601: @FelixIP: In my case, how does the Describe object works with the list-object and in which position do you think I should insert it?
• FelixIP: d=arcpy.Describe(x);n=len(d.FIDset); if n>0:break
• Franziska0601: @FelixIP: I insert it like this, but it make no difference. Do you know what went wrong? for x in fcsites2: d = arcpy.Describe(x) n = len(d.FIDset) if n>0:break arcpy.SelectLayerByAttribute_management(x, "NEW_SELECTION", fields_site + "='" + selection + "'")

Answer 1

Based on the hint of Felix I use now the following code in the onSelChange Part and it works faster:

 def onSelChange(self, selection):
 self.value = selection
 sel_len = len(selection)
 if len(selection) > 8:
 fcsites2 = [fc_biotop_pol, fc_biotop_poi, fc_biotop_li, fc_pro1_pol, fc_pro1_poi, fc_pro1_li]
 for x in fcsites2:
 arcpy.SelectLayerByAttribute_management(x, "NEW_SELECTION", fields_site + "='" + selection + "'")
 d = arcpy.Describe(x) 
 n = len(d.FIDset)
 if n > 0:
 break
 else:
 fcakode2 = [fc_pro1_pol, fc_pro1_poi, fc_pro1_li]
 for y in fcakode2:
 arcpy.SelectLayerByAttribute_management(y, "NEW_SELECTION", akode + "='" + selection + "'")
 d = arcpy.Describe(y)
 n = len(d.FIDset)
 if n > 0:
 break
 self.df.zoomToSelectedFeatures()
 self.df.scale = 5000