Emercoin json-rpc simple python driver

emerRPCdriver.py

import json
import requests


class EmercoinClient(object):
    def __init__(self,
                 user='rpcuser from emercoin.conf',
                 password='rpcpassword from emercoin.conf',
                 protocol='http',
                 host='hostname or IP where EMC is running',
                 port='port, that emercoin is listening'):
        self.allowed_methods = ['name_new', 'name_show', 'name_mempool', 'name_update', 'name_list']

        self.user = user
        self.password = password
        self.protocol = protocol
        self.host = host
        self.port = port

    def call_command(self, command, *args):

        credentials = f"{self.user}:{self.password}@"
        url = f"{self.protocol}://{credentials}{self.host}:{self.port}"

        data = { 'method': command }

        if args:
            data['params'] = args

        try:
            r = requests.post(url=url, data=json.dumps(data))
            data = r.json()
        except requests.ConnectionError:
            return {'result': None, 'error':{'code': 500, 'message': "can't connect server"}}
        except ValueError:
            error_msg = "can't connect server"
            if r.status_code == 401:
                error_msg = 'unauthorized'
            return {'result': None, 'error':{'code': r.status_code, 'message': error_msg}}
        return data

    def name_new(self):
        name = input("name ")
        value = input("value ")
        days = int(input("days "))
        return self.call_command('name_new', name, value, days)

    def name_update(self):
        name = input("name ")
        value = input("value ")
        days = int(input("days "))
        return self.call_command('name_update', name, value, days)

    def name_show(self):
        name = input("name ")

        return self.call_command('name_show', name)

    def name_list(self):
        return self.call_command('name_list')

    def name_mempool(self):
        return self.call_command('name_mempool')


if __name__ == '__main__':
    #
    client = EmercoinClient(user='emccoinrpc', password='123456', host='cantdoevil.com',
                            port=6662, protocol='http')
    print("Hi! I'm a simple emercoin client. Keep attention for what you're writing")
    while True:
        print("You can use this methods:")
        print(*client.allowed_methods)
        print()
        command = input('input method name ')
        if command not in client.allowed_methods:
            print('please use allowed methods')
            print(*client.allowed_methods)
            print()
        elif command == 'name_new':
            result = client.name_new()
            print(result)
        elif command == 'name_update':
            result = client.name_update()
            print(result)
        elif command == 'name_mempool':
            result = client.name_mempool()
            print(result)
        elif command == 'name_list':
            result = client.name_list()
            print(result)
        elif command == 'name_show':
            result = client.name_show()
            print(result)