Rounding in Python

  • Comments posted to this topic are about the item Rounding in Python

    Tomaž Kaštrun | twitter: @tomaz_tsql | Github: https://github.com/tomaztk | blog:  https://tomaztsql.wordpress.com/

  • [/edit] removed silly reply 😐

    [/edit2] I think your position logic is faulty; position[0] is 3 (not 0), position[-3] is 0 so the answer is correct but your logic states position[-2]. This might be confusion on zero- or one-based counting? Is it obvious I chose the wrong answer?

    Thank you for the challenge!

    • This reply was modified 1 year, 1 month ago by  fschreuder.
    • This reply was modified 1 year, 1 month ago by  fschreuder.
  • the answer for val2[-3] is 3, and -3 is not equal to -2

  • Agreed the indexing logic isn't right.  Negative values index backwards from the end of the string (-1 being the last character, etc.)  In this case, the index of 0 and -4 are the same character (3), etc, so it would look like so:

    3    0   .   0

    0    1   2   3 (positive index numbers)

    -4 -3 -2  -1 (negative index numbers)

    I got the answer wrong, but then I looked into it because I was curious to understand it.  I'm a bit of a newbie with Python so I ran some different strings through this code in my interpreter to make sure I understood it.

    Regardless, thanks for the cool exercise.

  • Python newbie here.  Why is the value of val1 (and val2) 30.0 and not just 30?

     

  • The radicand is floating point so the result will also be.  Rounding the floating point result will remain floating point.

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