atbash, robot simulator, sum of multiples exercises

python/sum-of-multiples/.exercism/metadata.json

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+{"track":"python","exercise":"sum-of-multiples","id":"376b2f4ace694adf9de021c6cc10e243","url":"https://exercism.io/my/solutions/376b2f4ace694adf9de021c6cc10e243","handle":"Xevion","is_requester":true,"auto_approve":false}

python/sum-of-multiples/README.md

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+# Sum Of Multiples
+
+Given a number, find the sum of all the unique multiples of particular numbers up to
+but not including that number.
+
+If we list all the natural numbers below 20 that are multiples of 3 or 5,
+we get 3, 5, 6, 9, 10, 12, 15, and 18.
+
+The sum of these multiples is 78.
+
+## Exception messages
+
+Sometimes it is necessary to raise an exception. When you do this, you should include a meaningful error message to
+indicate what the source of the error is. This makes your code more readable and helps significantly with debugging. Not
+every exercise will require you to raise an exception, but for those that do, the tests will only pass if you include
+a message.
+
+To raise a message with an exception, just write it as an argument to the exception type. For example, instead of
+`raise Exception`, you should write:
+
+```python
+raise Exception("Meaningful message indicating the source of the error")
+```
+
+## Running the tests
+
+To run the tests, run the appropriate command below ([why they are different](https://github.com/pytest-dev/pytest/issues/1629#issue-161422224)):
+
+- Python 2.7: `py.test sum_of_multiples_test.py`
+- Python 3.4+: `pytest sum_of_multiples_test.py`
+
+Alternatively, you can tell Python to run the pytest module (allowing the same command to be used regardless of Python version):
+`python -m pytest sum_of_multiples_test.py`
+
+### Common `pytest` options
+
+- `-v` : enable verbose output
+- `-x` : stop running tests on first failure
+- `--ff` : run failures from previous test before running other test cases
+
+For other options, see `python -m pytest -h`
+
+## Submitting Exercises
+
+Note that, when trying to submit an exercise, make sure the solution is in the `$EXERCISM_WORKSPACE/python/sum-of-multiples` directory.
+
+You can find your Exercism workspace by running `exercism debug` and looking for the line that starts with `Workspace`.
+
+For more detailed information about running tests, code style and linting,
+please see [Running the Tests](http://exercism.io/tracks/python/tests).
+
+## Source
+
+A variation on Problem 1 at Project Euler [http://projecteuler.net/problem=1](http://projecteuler.net/problem=1)
+
+## Submitting Incomplete Solutions
+
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.

python/sum-of-multiples/sum_of_multiples.py

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+ismultiple = lambda num, multiples: any(num % sub == 0 for sub in multiples)
+
+def sum_of_multiples(limit, multiples):
+    multiples = [mult for mult in multiples if mult != 0]
+    return sum([i for i in range(1, limit) if ismultiple(i, multiples)])

python/sum-of-multiples/sum_of_multiples_test.py

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+"""
+You can make the following assumptions about the inputs to the
+'sum_of_multiples' function:
+    * All input numbers are non-negative 'int's, i.e. natural numbers
+      including zero.
+    * A list of factors must be given, and its elements are unique
+      and sorted in ascending order.
+"""
+
+import unittest
+
+from sum_of_multiples import sum_of_multiples
+
+
+# Tests adapted from `problem-specifications//canonical-data.json` @ v1.5.0
+
+class SumOfMultiplesTest(unittest.TestCase):
+    def test_multiples_with_no_factors_in_limit(self):
+        self.assertEqual(sum_of_multiples(1, [3, 5]), 0)
+
+    def test_multiples_of_one_factor_within_limit(self):
+        self.assertEqual(sum_of_multiples(4, [3, 5]), 3)
+
+    def test_various_multiples_in_limit(self):
+        self.assertEqual(sum_of_multiples(7, [3]), 9)
+
+    def test_various_factors_with_multiples_in_limit(self):
+        self.assertEqual(sum_of_multiples(10, [3, 5]), 23)
+
+    def test_multiples_counted_only_once(self):
+        self.assertEqual(sum_of_multiples(100, [3, 5]), 2318)
+
+    def test_multiples_with_large_limit(self):
+        self.assertEqual(sum_of_multiples(1000, [3, 5]), 233168)
+
+    def test_multiples_with_three_factors(self):
+        self.assertEqual(sum_of_multiples(20, [7, 13, 17]), 51)
+
+    def test_multiples_with_factors_not_prime(self):
+        self.assertEqual(sum_of_multiples(15, [4, 6]), 30)
+
+    def test_multiples_with_factors_prime_and_not(self):
+        self.assertEqual(sum_of_multiples(150, [5, 6, 8]), 4419)
+
+    def test_multiples_with_similar_factors(self):
+        self.assertEqual(sum_of_multiples(51, [5, 25]), 275)
+
+    def test_multiples_with_large_factors(self):
+        self.assertEqual(sum_of_multiples(10000, [43, 47]), 2203160)
+
+    def test_multiples_of_one_will_be_all(self):
+        self.assertEqual(sum_of_multiples(100, [1]), 4950)
+
+    def test_multiples_of_an_empty_list(self):
+        self.assertEqual(sum_of_multiples(10000, []), 0)
+
+    def test_multiples_of_zero_will_be_none(self):
+        self.assertEqual(sum_of_multiples(1, [0]), 0)
+
+    def test_multiples_with_a_zero_factor(self):
+        self.assertEqual(sum_of_multiples(4, [0, 3]), 3)
+
+    def test_multiples_of_several_factors(self):
+        self.assertEqual(sum_of_multiples(10000,
+                         [2, 3, 5, 7, 11]), 39614537)
+
+
+if __name__ == '__main__':
+    unittest.main()