Can we change an especial type of order in Python?

Question

Guys I have a question about Python , when comparing strings like "a" and "aa" , can I change order of lexicography in Python ?? Like I'd rather change it to my own default... for example the first letter starts with "z" , so "z" is smaller than "a"

Answer 1

You could define your own string class with it's own comparison magic methods

Or just make a function and call it with the 2 strings as parameters

Or fork the python language and crate your own with this feature (but this may not be the best nor the simplest solution...)

Answer 2

I'm afraid this will be a little bit too complicated to be explained (expecially to a beginner) with a Q&A answer...

Also, can you be more precise on what is the order you intend (maybe with examples)?

Answer 3

Ipang order of strings matter , as defalut (in python) a is less than b because a is the first letter and b is not..

Answer 4

Ali_combination
Are you talking about comparison of 2 strings, or about sorting an iterable? I'm not getting what you are doing here.

Answer 5

Ok, so it's just a matter of comparing the lengths, and if they are equal compare the strings in the normal way, am I right?

For the <

if len(s1) == len(s2) :
return s1 < s2
else:
return len(s1) < len(s2)

Or you can make it return -1 0 1 for <=>

Answer 6

You can do anything you want, but some are more difficult than others...

Btw, here is a compare function

def compare(s1, s2):
if s1 == s2: return 0
if len(s1) == len(s2):
return 1 if s1>s2 else -1
else:
return 1 if len(s1) > len(s2) else -1

Answer 7

Angelo Thank you so much , i just didnt get it.. what is len? An especial method or any function?

Answer 8

ihab 🌼 wow😂 i think there's a lot left to improve ma knowledge about Python so i can do anything else and code what I need then... thank you so much gentleman ! I guess that should be the best method to create my ideal program..

Answer 9

Angelo of course im still a beginner in Python but , how can I define a new order ?

Answer 10

I got so many examples in ma mind , but d simplest is like this..we use just a and b , and the order is like this : a , aa , aaa , aab , ab , aba , abb , b , ba , baa , bab , bb , bba , bbb , ... and maximize length of strings are 6 . So first , we write all strings which their length is 1 , then write all strings which their length is 2 , and to the end ..

Answer 11

Angelo I think you are right.. and i should improve ma knowledge.. so i can compare it to any order i like , right?

Answer 12

len is a built-in function that returns the length of a string

Answer 13

Angelo 👍👍 thank you.

Answer 14

You are welcome Ali_combination

Answer 15

ok

Answer 16

I thing the following will help

list["z","y","x",...,"c","b","a"]

So you defind a list of your own alphabet order, now you can iterate the list and list[0] is the character z list[1] = y, list[2] = "x".....list[25] = a.

you could also reverse the order of list characters using list[::-1] so that you get the original alphabet order. in a list you can put the order that you want.

Hope you will get to the result you want, and consider revising the list module.

Answer 17

https://www.sololearn.com/Course/JUMP_LINK__&&__Python__&&__JUMP_LINK-for-Beginners/?ref=app

Answer 18

You are welcome🌼 Ali_combination