Went a similar route, but this is considerably shorter! nice job! :)

I still do not understand what shoul i do, i seems that i have problem with this (The restriction is that the characters in part1 and part2 should be in the same order as in s), but in the second test they are not in the same order as in s and it shows 'True'. Can smb explain to me?

Please use appropriate markdown formatting when posting code. See https://docs.codewars.com/training/troubleshooting#post-discourse.

how can i know what tests are failing? it shows True should equal False

See https://docs.codewars.com/training/training-example#debugging-a-kata and https://docs.codewars.com/training/troubleshooting#print-input.

d | other

Create a new dictionary with the merged keys and values of d and other, which must both be dictionaries. The values of other take priority when d and other share keys.

New in version 3.9.

(cf. https://docs.python.org/3/library/stdtypes.html#mapping-types-dict)

cool..

I'm always looking for a way to use reduce and for the most obvious reduction challenges, its my goto, but I need to study this more to wrap my head around what's happening here. This takes reduction to a new level. I'd really like to use this pattern once I understand it.

You are sorting a list containing strings and ints. < only works on operands of the same type (unlike e.g. in JavaScript where everything is compared as string by default)

as a beginer can say that this kata is still hard to those who can solve 4,5 kyu

key=lambda a: (len(a), a) is the sort key, he sorts based on the length of the string first and then on the string itself that means the default sort key when sorting strings (alphabetically)
As the task wants you to start with the longest names and proceed to the shortest and also sort from z-a in case of same length he uses reverse=True to reverse the sort order on both keys

multiply_all([1,2,3])(2)