Second: what's the difference nums = [1,2,3,4,5,6] Between? >> nums = nums[-3:] + nums[:-3] || nums[:] = nums[-3:] + nums[:-3]

Question

First question: Difference between -- lst[-1:] and lst[::-1] -- in python [SOLVED] ✓

Answer 1

Format is like- list [start : end : step]# step is optional

List[::-1] reverses the list
For example
List=[1,2,3,4,5]
print(list[::-1]) #output is [5,4,3,2,1]

print(list[-1:]) #output is [5]
where index -1 is start point and printing start from 5

print(list[-2:])#output is [4,5]

print(list[:-1])#output is [1,2,3,4]
where index -1 is end point and printing output till 4,not include 5

Answer 2

Thanks, what about
nums = [1,2,3,4,5,6]
nums = [-3:] + [:-3]
nums[:] = [-3:] + [:-3]

Answer 3

It gonna print syntax error
[-3:]+[:-3] is invalid for nums
But you can write like that
👇
nums=nums[-3:]+nums[:-3]
print(nums)
#output is [4,5,6,1,2,3]

B.coz you wanna print the value of nums list, so you have to use variable name "nums" and write nums[ -3:] instead of writing like [-3:]

for further explanation on list slicing
read it there.
https://www.learnbyexample.org/JUMP_LINK__&&__python__&&__JUMP_LINK-list-slicing/
https://stackoverflow.com/questions/4081561/what-is-the-difference-between-list-and-list-in-python
https://www.geeksforgeeks.org/python-list-slicing/

Answer 4

My mistake, I mean what's the difference
nums = [1,2,3,4,5,6]
Between?
nums = nums[-3:] + nums[:-3]
nums[:] = nums[-3:] + nums[:-3]
Note: i know the output is the same