yacht game exercise

python/yacht/README.md

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+# Yacht
+
+# Score a single throw of dice in *Yacht*
+
+The dice game [Yacht](https://en.wikipedia.org/wiki/Yacht_(dice_game)) is from
+the same family as Poker Dice, Generala and particularly Yahtzee, of which it
+is a precursor. In the game, five dice are rolled and the result can be entered
+in any of twelve categories. The score of a throw of the dice depends on
+category chosen.
+
+## Scores in Yacht
+
+    Category    Score                   Example
+    Ones            1 × number of ones      1 1 1 4 5 scores 3
+    Twos            2 × number of twos      2 2 3 4 5 scores 4
+    Threes          3 × number of threes    3 3 3 3 3 scores 15
+    Fours           4 × number of fours     1 2 3 3 5 scores 0
+    Fives           5 × number of fives     5 1 5 2 5 scores 15
+    Sixes           6 × number of sixes     2 3 4 5 6 scores 6
+    Full House      Total of the dice       3 3 3 5 5 scores 19
+    Four of a Kind  Total of the four dice  4 4 4 4 6 scores 16
+    Little Straight 30 points               1 2 3 4 5 scores 30
+    Big Straight    30 points               2 3 4 5 6 scores 30
+    Choice          Sum of the dice         2 3 3 4 6 scores 18
+    Yacht           50 points               4 4 4 4 4 scores 50
+
+If the dice do not satisfy the requirements of a category, the score is zero.
+If, for example, *Four Of A Kind* is entered in the *Yacht* category, zero
+points are scored. A *Yacht* scores zero if entered in the *Full House* category.
+
+## Task
+Given a list of values for five dice and a category, your solution should return
+the score of the dice for that category. If the dice do not satisfy the requirements
+of the category your solution should return 0. You can assume that five values
+will always be presented, and the value of each will be between one and six
+inclusively. You should not assume that the dice are ordered.
+
+## 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 yacht_test.py`
+- Python 3.4+: `pytest yacht_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 yacht_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/yacht` 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
+
+James Kilfiger, using wikipedia [https://en.wikipedia.org/wiki/Yacht_(dice_game)](https://en.wikipedia.org/wiki/Yacht_(dice_game))
+
+## Submitting Incomplete Solutions
+
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.