Slicing range() function in Python

range() allows users to generate a series of numbers within a given range. Depending on how many arguments the user is passing to the function, the user can decide where that series of numbers will begin and end as well as how big the difference will be between one number and the next.range() takes mainly three arguments.

  • start: integer starting from which the sequence of integers is to be returned
  • stop: integer before which the sequence of integers is to be returned.
    The range of integers end at stop – 1.

  • step: integer value which determines the increment between each integer in the sequence

Note: For more information, refer to Python range() function

Example:

filter_none

edit
close

play_arrow

link
brightness_4
code

# Python Program to  
# show range() basics 
    
# printing a number 
for i in range(10): 
    print(i, end =" "
print()

chevron_right


Output:



0 1 2 3 4 5 6 7 8 9 

Slicing Range function

In Python, range objects are not iterators but are iterables. So slicing a range() function does not return an iterator but returns an iterable instead.

Example:

filter_none

edit
close

play_arrow

link
brightness_4
code

# Python progream to demonstrate
# slicing of range function
  
  
a = range(100)
  
# Slicing range function
ans = a[:50]
print(ans)

chevron_right


Output:

range(0, 50)

Now our new range ‘ans’ has numbers from 0 to 50 (50 exclusive). So a generalization for understanding this is 

a[start : end : the difference between numbers]

So doing something like ans = a[10:89:3] will have a range of numbers starting from 10 till 89 with a difference of 3 in between them. 

Example:

filter_none

edit
close

play_arrow

link
brightness_4
code

# Python progream to demonstrate
# slicing of range function
  
  
a = range(100)
  
# Slicing range function
ans = a[10:89:3]
print(ans)
  
ans = a[::5]
print(ans)

chevron_right


Output:

range(10, 89, 3)
range(0, 100, 5)

Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course.




My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.


Article Tags :

1


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.