ingresar usando input un codigo de provedores, nombre de la empresa, nombre del agente, telefono de la empresa, telefono agente, guardar y leer datos en un archivo txt usando os y ast

import ast
import os

providers = {}
def addprovider(codeprovider, name, agent, phonecompany, phoneagent):
  providers[codeprovider] = {
    'name': name,
    'agent': agent,
    'phonecompany': phonecompany,
    'phoneagent': phoneagent
  }
  with open('providers.txt', 'w') as f:
    f.write(str(providers))

def readproviders():
  if not os.path.isfile('providers.txt'):
    return
  with open('providers.txt', 'r') as f:
    return ast.literal_eval(f.read())

def askproviders():
  codeprovider = input('Enter the code of the provider')
  name = input('Enter the name of the provider')
  agent = input('Enter the name of the agent')
  phonecompany = input('Enter the number of the company')
  phoneagent = input('Enter the number of the agent')

  addprovider(codeprovider,