python to identify curved segments

curves.py

import arcpy, json

fc = "C:\Proj\Proj.gdb\curve"

fields=["SHAPE@", "OBJECTID"] # replace OBJECTID with any unique ID field

with arcpy.da.SearchCursor(in_table=fc,field_names=fields,where_clause="") as cur:

    count = 0
    for row in cur:
        count+=1
        j = json.loads(row[0].JSON)
        if 'curvePaths' in j:
            print "curve id: " + str(row[1])
    print "total: "+str(count)