If we define dispatcher with dispatcher property, then it works correctly according to the new context approach of ptb 12
dp = DjangoTelegramBot.dispatcher
If we define dispatcher with getDispatcher method, then dispatcher is constructed for old version (not for ptb 12)
dp = DjangoTelegramBot.getDispatcher('my_token')
If we define dispatcher with dispatcher property, then it works correctly according to the new context approach of ptb 12 dp = DjangoTelegramBot.dispatcher
If we define dispatcher with getDispatcher method, then dispatcher is constructed for old version (not for ptb 12) dp = DjangoTelegramBot.getDispatcher('my_token')