BUG-000140734 for ArcGIS Pro

不具合 ID 番号	BUG-000140734
送信されました	June 15, 2021
最終更新日	March 20, 2025
適用対象	ArcGIS Pro
見つかったバージョン	2.8
オペレーティングシステム	Windows OS
オペレーティングシステムのバージョン	10.0 64 Bit
ステータス	Will Not Be Addressed

参考情報

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.

対処法

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