ArcGIS Maplex Python Labeling: If a value in a date field is null, how do I still show other values?

MichaelHutchison · ‎03-09-2017

I'm trying to label point features with ArcGIS Maplex Engine, using [field1], [field2], [field3], [datefield]. My code is set up to label [field1] + '\n' + [datefield][-2:]. If [field1] is null, it'll label [field2] + '\n' + [field3] + '\n' + [datefield][-2:]. For whatever reason, my code doesn't work if a feature has a null value in [datefield]. How do I tell my code if the [datefield] is null, label [field1] AND if [datefield] and [field1] is null, label [field2] + '\n' + [field3]? This is my code so far.

def FindLabel ( [field1], [field2], [field3], [datefield] 😞
if str([field1]) == "None" :
return [field2] + '\n' + [field3] + '\n' + [datefield][-2:]
elif str([field1]) != "None" :
return [field1] + '\n' + [datefield][-2:]

I tried adding this section but the engine doesn't seem to read it.

elif [datefield] == "None" :

return [field1]

elif [datefield] == "None" and str([field1]) == "None" :

return [field2] + '\n' + [field3]

My entire code is this.

def FindLabel ( [field1], [field2], [field3], [datefield] 😞
if str([field1]) == "None" :
return [field2] + '\n' + [field3] + '\n' + [datefield][-2:]
elif str([field1]) != "None" :
return [field1] + '\n' + [datefield][-2:]

elif [datefield] == "None" :

return [field1]

elif [datefield] == "None" and str([field1]) == "None" :

return [field2] + '\n' + [field3]

Thanks for the help.

DanPatterson_Retired · ‎03-13-2017

Which makes sense if you examine their inherent properties...

>>> None.__sizeof__()
16
>>> "".__sizeof__()
51
>>> max(None.__sizeof__(), "".__sizeof__())
51‍‍‍‍‍‍