What skills/topics would you consider essential for kickstarting a career in data science, say with an internship?

Basically the title. Interested to know what do industry experts would consider as essential skills/topics in Data Science (along with preferred tech stack used perhaps).

I am asking this as I am building up my portfolio for getting a Data Science internship and wonder when can I consider the breadth of topics I have covered to be enough to start applying for internships.

Currently, I have both theoretical and practical groundwork ready for these topics: Linear Regression, Logistic Regression, SVM, …

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