Error in code, how to fix?

Question

Python

Here is the code:

def RanSL(message):
      time.sleep(0.5)
      N = random.randint(1,5)
      Ne = (str(N)) + '.txt'
      file = open(Ne,"r")
      random = file.read()
      bot.send_message(message.chat.id,random)

mistake:

UnboundLocalError: local variable 'random' referenced before assignment

When I declare a variable not in a function, but at the beginning, it works. But I need it in a function.

Answer 1

random is not initialized

Answer 2

import time
import random

def RanSL(message):
    time.sleep(0.5)
    N = random.randint(1,5)
    Ne = (str(N)) + '.txt'
    file = open(Ne,"r")
    random = file.read()
bot.send_message(message.chat.id,random)