How do I sort, get rid of numbers and organize?

Question

If I were to ask someone to enter value:

value = input("List numbers: ")

and I wanted to organize it:

User Input = 1, 2, 3, 2

and get a print() of 1, 2, 3 as a result- getting rid of extra numbers
How would I go about doing that?
and also How would I organize them? for an example 2 1 4 3 5 and get a print() of 1 2 3 4 5

Answer 1

It seems you're looking for a list of sorted unique numbers. You can use sorted(set(map(int, value.split(","))) to get that. See the Demo -

>>> value = raw_input("List numbers: ")
List numbers: 2, 1, 4, 3, 5, 3, 2, 4, 1
>>> sorted(set(map(int, value.split(','))))
[1, 2, 3, 4, 5]

1. value.split(',') splits the input list on ',' , thus returning a list of strings.
2. map(int, ...) converts each entry in the above list to an integer.
3. set(...) makes a set out of the above list, thus eliminating any duplicates.
4. sorted(...) sorts the set and produces a list.

You could then use join(...) method to convert it back into a string. If for example you wanted to seperate them with a ', ' , you could do

>>> ", ".join(map(str, sorted(set(map(int, value.split(',')))))) # Or use an equivalent List Comprehension.
'1, 2, 3, 4, 5'

Answer 2

Here is a step by step guide to

• Accepting input
• Splitting into a list
• Converting elements to integers
• Removing duplicates
• Sorting the list

---

input = raw_input("Please enter your numbers separated by commas: ")
inputList = input.split(',')              # creates a list from comma delimeters
intList = [int(i) for i in inputList]     # converts to int list
uniqueList = set(intList)                 # removes duplicates
sortedList = sorted(uniqueList)           # converts to ints and sorts

This code requires the user to use commas to separate values. This can be changed.

To do the same thing with strings try this

input = raw_input("Please enter your words separated by commas: ")
inputList = input.split(',')              # creates a list from comma delimeters
uniqueList = set(inputList)               # removes duplicates
sortedList = sorted(uniqueList)           # converts to ints and sorts