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As with anything, it isn't necessary to learn something unless there is a personal need for it.
If you want to learn Python, learn it, if you need it for your job, study hard, but if it has no impact on your desires, leave it. :)
There's different aspect in EE, generally in undergraduate you get a smattering of education. If your focus is in Computer Science you may learn Boolean Logic and Algebra, machine language, assembly language, and higher level languages as Basic, C++, ect. The higher level languages you learn are the ones presently being used in the world and to make yourself more valuable to potential employer you should be familiar with them all. I had some Computer Science in the past but it isn't may main interest, I'm presently trying to get some familiarity with Mathematica which goes from Word Processing to very high level mathematical analysis which I find required in other aspect of EE.
It's not necessary. But in my experience Python is a beautiful language to quickly prototype some code, that can be a very handy tool to have.
And I see a growing demand for Python coders in the working field.