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I have some text that I am trying to decode and encode in Python

import html.parser
original_tweet = "I luv my <3 iphone & you’re awsm 
 apple.DisplayIsAwesome, sooo happppppy 🙂 
 http://www.apple.com"
tweet = original_tweet.decode("utf8").encode('ascii', 'ignore')

I have entered the original tweet on one line in Spyder (Python 3.6)

I get the following message AttributeError: 'str' object has no attribute 'decode'

Is there an alternative way to rewrite this code for Python 3.6?

Thanks in advance.