Dfyjkt

This is my flask code for pagination and when i posted the url there
was error messages showing like

start_copy = max(1, start - limit)
TypeError: unsupported operand type(s) for -: 'pagination' and 'str'
help me to solve this error!!

from flask import Flask, abort, request, jsonify


from models import Categories

from flask_restful import Resource

app = Flask(__name__)

class pagination(Resource):

 url= '/getbypages'
 start=1
 limit=20
 def get(start,limit):
 results = [1,2,3,4,5,6,7,8,9,10]
 print("resultsllllllllllll",results)
 count = len(results)
 obj = 
 if count < 1:
 print("404")
 else:
 #count = limit-start
 #print(count)
 obj['start'] = start
 obj['limit'] = limit
 obj['count'] = count
 print(obj)
 if start == 1:
 obj['previous'] = ''
 else:
 start_copy = max(1, start - limit)
 print(start_copy)
 limit_copy = start - 1
 obj['previous'] = url + '?start=%d&limit=%d' % (start_copy, limit_copy)
 if start + limit > count:
 obj['next'] = ''
 else:
 start_copy = start + limit
 obj['results'] = results[(start - 1):(start - 1 + limit)]
 return obj
 print(get(start, limit))