Error
In ArcGIS Pro, calculating the field values with the 'is' operator does not work if the corresponding value has spaces or special characters.
| Número de ID del error | BUG-000140734 |
|---|---|
| Enviado | June 15, 2021 |
| Última modificación | March 20, 2025 |
| Relacionado con | ArcGIS Pro |
| Versión encontrada | 2.8 |
| Sistema operativo | Windows OS |
| Versión de sistema operativo | 10.0 64 Bit |
| Estado | Will Not Be Addressed |
Información adicional
This is a quirk of the is the operator in Python (which checks whether two objects point to the same memory), and how strings are stored (equivalent alphanumeric strings like 'Texas' point to the same object in memory when invoked, strings such as 'South Dakota' do not point to the same object in memory. The top answer at https://stackoverflow.com/questions/16756699/is-operator-behaves-differently-when-comparing-strings-with-spaces describes this well). String equality has to be checked using == (which checks for value equality) for this reason.Solución alternativa
It is to be noted other operators can be used in the scenario to return the results when matching them up with the fields having values of either spaces or some other special characters.
Expression 1:
def Reclass(value1):
if value1 == 'South Dakota':
return 1
else:
return 0
Expression 2:
def Reclass(value1):
if 'South Dakota' in value1:
return 1
else:
return 0
Pasos para reproducir
ID del error: BUG-000140734
Software:
- ArcGIS Pro
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