Hello,
I am trying to use python dictionaries to change the feature values of different fields.
I created the script below to change the feature values of a field called "DOR_UC" and as you can see there is a list of other fields where I need to do something similar - that's why there is a long list of other fields.
import arcpy
# script to assign values to features in one field based on a value in the dictionary
arcpy.env.workspace = r"D:\APRX_MXDS\USA_Parcels_2019_Project\test_featureclasses.gdb"
arcpy.env.overwriteOutput = True
# feature class
fc = "testing_fc"
# printing all fields in fc
fields = [f.name for f in arcpy.ListFields(fc)]
print(fields)
# dictionary
uses = {"000" : "Vacant Residential – with/without extra features", "001" : "Single Family", "002": "Mobile Homes",
"003" : "Multi-family - 10 units or more",
"004" : "Condominiums",
"005" : "Cooperatives",
"006" : "Retirement Homes not eligible for exemption",
"007" : "Miscellaneous Residential (migrant camps, boarding homes, etc.)",
"008" : "Multi-family - fewer than 10 units",
"009" : "Residential Common Elements/Areas",
"010" : "Vacant Commercial - with/without extra features",
"011" : "Stores, one story",
"012" : "Mixed use - store and office or store and residential combination",
}
# dictionary keys to list
usesKey = list(uses.keys())
# dictionary values to list
usesvalues = list(uses.values())
# List of fields
fields = ["BAS_STRT", "DOR_UC", "TEST", "PAR_SPLT", "CONST_CLASS", "IMP_QUAL", "M_PAR_SAL1", "QUAL_CD1"]
with arcpy.da.UpdateCursor(fc, fields) as cursor:
for row in cursor:
if usesKey in row[1]:
row[2] = usesvalues
cursor.updateRow()Field DOR_UC currently has some codes that I need to convert into a sentence.
See image below for fc attribute's table:
Each of those codes has a meaning in the form of a sentence. I need to assign their meaning and delete the codes.
To do this I've created a dictionary where the key is the code and the value is the sentence (See attached csv).
To start testing the script I created a field called "TEST" where I want to put the value part of the dictionary.
So the code would go something like this:
If a feature in field DOR_UC is equal to 000 then the feature value in field TEST would be "Vacant Residential - with/without extra features".
When I try to run the code I am getting this first error:
Traceback (most recent call last):
File "D:/APRX_MXDS/USA_Parcels_2019_Project/Scripts/Dictionary Key() method_2.py", line 44, in <module>
for row in cursor:
RuntimeError: A column was specified that does not exist.The weird thing is that I have both of the columns.
Not sure how to solve this.
Also, not sure if the overall code has more errors.
Could someone help me with this? I need to finish this today and I have no idea on how to continue.
thank you!
