Python | Sequences exercise | Print a list of integers not expressible in a certain way

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Software ==> Python  (28 exercises)
Version ==> Latest version
Topic ==> Sequences  (7 exercises)
Level ==> Harder than average
Subject ==> Python training

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Let's define an owl number as an integer which can be expressed as the sum of at least one integer and the sum of its digits.   For example, the number 371 generates an owl number of 382, since:

  • the value of 371 is 371
  • the sum of its digits is 3 + 7 + 1 = 11
  • the sum of 371 and 11 = 382

Using this information, generate a list of the integers between 1 and 10000 which are not owl numbers:

Start of number list

The start of your output should look like this (group your numbers into 100s).


One way to do this is to generate a list of owl numbers, then loop over the integers finding all those not in this list.

When you've finished, close your file down!

You can unzip this file to see the answers to this exercise, although please remember this is for your personal use only.
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