I agree that Python is not too different and in general I treat my Python variables as const. One thing, however, where I resort to mutating variables more often than I'd like is when building lists & dictionaries. Lambdas in Python have horrible DX (no multi-line, no type annotations, bad type checker support even in obvious cases), which is why the functional approach to build your list, using map() and filter() is much more cumbersome than in JS. As a result, whenever a list comprehension becomes too long, you end up building your list the old-fashioned way, using a for loop and the_list.append().

In python there's no let, var nor const. So yes.

Javascript only enforces reassignments to const. So this,

  const arr = []
  arr.push(“grape nuts”]

is just peachy in JS and requires the programmer to avoid using it.

More importantly, because working immutably in JS is not enforced, trying to use it consistently either limits which libraries you can use and/or requires you to wrap them to isolate their side effects. ImmerJS can help a lot here, since immutability is its whole jam. I’d rather work in a language where I get these basic benefits by default, though.

    > Javascript only enforces reassignments to const.

Java is the same with the keyword final. I never heard anyone complain about it. Are you asking for the special hell that is C++ const correctness?

Python doesn't have constants at the language level. You can create classes without setter properties, only getter properties, to have constant objects. This is rare, usually people just write the name in SCREAMING_SNAKE_CASE to document it's supposed to be a constant but Python will still allow mutating it.