Running nested if then statements on selected features in a Python addin button

kad37_pns

Hello! 

I'm currently trying to create a button within arcmap that runs a set of if-then rules to fill in a blank field within the layer's attribute table. I've been able to do this in the field calculator with no problem, but in order to speed up the process, I would like to be able to run the process in one click rather than manually labeling. 

My issue is that I don't know how to get it so that the button takes the already selected features and then proceeds to run the nested statements. 

 

import arcpy
import pythonaddins

class BlockAnno(object):
    """Implementation for Test_addin.button (Button)"""
    def __init__(self):
        self.enabled = True
        self.checked = False
    def onClick(self):
		lyr = pythonaddins.GetSelectedTOCLayerOrDataFrame()
        with arcpy.da.UpdateCursor(lyr,["block", "sub_code"]) as blockanno:
			if sub_code != '0000': 
				if sub_code != '0780':
					if block[0:3].isdigit():
						blockanno = str(block[0:3].lstrip('0'))
					elif block[2].isalpha():
						if block[0:2] == '00':
							blockanno = str(block[0:].strip('0'))
		cursor.updateRow()
return(BlockAnno)

 

I'm hoping this is feasible, but would appreciate any guidance or advice. 

Anonymous User

Edited to fix indexes.

First look at it, I think you are missing some things for the cursor.  It looks like you are missing the iteration part:

 

for row in blockanno:
    if row[1] != '0000' and row[1] != '0780':
     ...

 

and

 

cursor.updateRow()

 

should be

 

blockanno.updateRow(row)

 

You need to include the field that you are updating.  As written, blockanno is the cursor object, so include the field that you want to update after the "sub_code" in the list of fields there so its index is row[2].

 

row[2] = str(row[0:].strip('0'))

 

 

Hopefully this will get you going.