Comparing multiple field values of two feature classes using ArcPy?

Question

I incorporated the following code into my script from Comparing field values of two feature classes using ArcPy? and it works great but I also need to compare two other fields values (i.e. YEAR & MONTH) from the same two FC's.

There is no problem with the code the way it is, I just need help on modifying the code to check 3 fields' attributes from 2 FC's to see if each row for the three fields contain the same attributes and if so not to copy the row to the target feature class. The fields in each FC do match exactly.

import arcpy

#input feature class
fc2 = r"C:\temp\temp.gdb\fc2"
#target feature class
fc3 = r"C:\temp\temp.gdb\fc3"

#check field
checkField = "SRNumber"

#Get list of values in field from target feature class
checkValues = [r[0] for r in arcpy.da.SearchCursor (fc3, checkField)]

#Get list of fields
fields = [f.name for f in arcpy.ListFields (fc2)]

#Get index of check field
index = fields.index (checkField)

#Create insert cursor for fc3 to allow appending of rows
inCursor = arcpy.da.InsertCursor (fc3, fields)

#Create search cursor to iterate input feature class
cursor = arcpy.da.SearchCursor (fc2, fields)
#iterate
for row in cursor:
    #Get value to check
    checkValue = row[index]

    #Check if value is in target fc
    if checkValue in checkValues:
        #skip if value is in target fc
        continue

    #Insert row otherwise
    inCursor.insertRow(row)

#Clean up
del cursor
del inCursor

Answer 1

To check all three attributes (or any number of listed fields) and insert complete row including geometry:

import arcpy
from operator import itemgetter

fc2 = r"C:\temp\temp.gdb\fc2" #input feature class
fc3 = r"C:\temp\temp.gdb\fc3" #target feature class
checkfields = ["SRNumber","YEAR","MONTH"] #fields to compare

fieldlist = [f.name for f in arcpy.ListFields(fc2) if not f.name.upper().startswith(('OBJ','SHA'))] #list all fields but objectid and shapefield(s)
fieldlist.append('SHAPE@')
checkindexes = [fieldlist.index(i) for i in checkfields]

all_values = [i for i in arcpy.da.SearchCursor(fc3, checkfields)]

icur = arcpy.da.InsertCursor(fc3,fieldlist)
with arcpy.da.SearchCursor(fc2,fieldlist) as cursor:
    for row in cursor:
        if itemgetter(*checkindexes)(row) not in all_values:
            icur.insertRow(row)
del icur