It helps to understand one language first, then you can approach the other language as a "how do I write X in Y". Like "How to do write Perl in Python".
Obviously there is going to be an impedance mismatch, but it's closer than not.
Mind, I segregate "learning the language" from "learning the libraries", though many conflate it. But to a new learner, they should be distinct.
Language is syntax and runtime. Libraries are just the utilities built on that syntax and runtime "How do I read a file" is a library problem (though technically not true as this was a first class concept in older languages like Fortran, BASIC, and Pascal).
While productive, Perl is a crummy language to learn first. It has no rigor. "There's more than one way to do it" can go too far, especially for a beginner.