Using update cursor with dictionary keys/values fails

Question

I've used Richard Fairhurst‌'s TurboCharging method on numerous occasions and today for some unknown reason I'm getting an error I've never seen: TypeError: 'int' object is not subscriptable and I'm not sure what I've done wrong: fc = 'DeliveryData_2018' updateFields = ['Zipcode','ClientCount'] edit = arcpy.da.Editor(ws) edit.startEditing(False,False) edit.startOperation() with arcpy.da.UpdateCursor(fc,updateFields) as updateRows: for updateRow in updateRows: keyValue = updateRow[0] if keyValue in countDict2018: updateRow[1] = countDict2018[keyValue][0] updateRows.updateRow(updateRow) edit.stopOperation() edit.stopEditing(True)‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ ''' countDict2018 is in the form of: {'84006': 3,'84009': 14,'84020': 37,...} '''‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ I need to check for the value in line 12 as my zipcode polygons have a few zipcodes that I don't serve; without that, it chokes on a zipcode value in the polygon fc that does not appear in the dictionary. (End of the day blues...)

JoeBorgione · Answer

Even better.  Thanks RIchard!  ( and thanks for your methodology)

RichardFairhurst · Answer

You say that: countDict2018 is in the form of: {'84006': 3,'84009': 14,'84020': 37,...} That means an example of the key is '84006' and an example of the value is 3. So the value is an integer and all you need to do to access it is use: countDict2018['84006']. You only add an index value like countDict2018['84006'][0] when the dictionary value contains a list or tuple (which was assumed in my sample blog code since I was normally storing values in the dictionary from multiple fields). So the code you wrote would only work if:

countDict2018 is in the form of:

{'84006': [3],'84009': [14],'84020': [37],...}

or
countDict2018 is in the form of:{'84006': (3),'84009': (14),'84020': (37),...}

JoeBorgione · Answer

Knowing my dictionary is a single value per key, I went with: dictValue = countDict2018.get(keyValue)‍