Python was not popular because of maths. Python was very popular long before the scientific computing stuff. Python was chosen for that for two reasons: ease of extension using C, and being extremely easy to read and write.

There's a reason that Python is commonly referred to as 'executable pseudocode'.

But yes, Ruby had Rails, JS had web browsers, Perl made string handling easy, Java was appealing to managers (don't let your moron employees write undefined behaviour: CHOOSE JAVA!), etc.