Always the same mistake

[ArturoJ]

from bittrex import *
my_bittrex = Bittrex("Api_Key", "Sec_Key", api_version=API_V2_0)
print(my_bittrex.get_balance('ETH'))

{'success': False, 'message': 'NO_API_RESPONSE', 'result': None}

Also with API 1_1

[ArturoJ]

from bittrex import *
my_bittrex = Bittrex(None, None, api_version=API_V1_1)
print(my_bittrex.get_markets())

{'success': False, 'message': 'NO_API_RESPONSE', 'result': None}

[cryptobeaver]

You need to change the "Api_Key" and "Sec_Key" to a valid one from your Bittrex account