16.6. Vary the Change Amount in Range

There is a version of range that takes an change amount, so that you can go up by more than one each time, or even down by a negative number. Try it out!

# initialize the variables numbers = [0,1,2,3,4,5,6,7,8,9,10] evens = [] # loop though every other index for index in range(0,len(numbers),2): # add the lists evens = evens + [numbers[index]] # print the result print(evens)

Before you keep reading...

Runestone Academy can only continue if we get support from individuals like you. As a student you are well aware of the high cost of textbooks. Our mission is to provide great books to you for free, but we ask that you consider a $10 donation, more if you can or less if $10 is a burden.

Support Runestone Academy Today

Before you keep reading...

Making great stuff takes time and $$. If you appreciate the book you are reading now and want to keep quality materials free for other students please consider a donation to Runestone Academy. We ask that you consider a $10 donation, but if you can give more thats great, if $10 is too much for your budget we would be happy with whatever you can afford as a show of support.

Support Runestone Academy Today

Which of these changes to the program would give you just the odd values in a list? (Again: Try it!) Select all that work.

• Start with numbers=[1,2,3,4,5,6,7,8,9,10]
• Yes, that would work, but there's an easier way
• Change the range to range(1,len(numbers),2)
• Yes, just by starting at 1, then skipping 2 each time, we'd collect the odds
• Change the range to range(0,len(numbers),1)
• No, that would collect all the numbers in evens
• Change the range to range(0,len(numbers),3)
• No, that would result in 0,3,6,9 in evens

Note

Discuss topics in this section with classmates.

Show Comments

You have attempted 1 of 3 activities on this page