Based on having worked for 3 corporations using python I can tell you it's not going to happen by 2020. Python 2.7 will live on in big companies for a couple mo

Based on having worked for 3 corporations using python I can tell you it's not going to happen by 2020. Python 2.7 will live on in big companies for a couple more decades. I will end my career before python 3 is adopted. It's more likely that by that time some other scripting language will be more popular.