python/roman-numerals: download exercise

python/roman-numerals/.exercism/config.json

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+{
+  "authors": [],
+  "contributors": [
+    "behrtam",
+    "BethanyG",
+    "cmccandless",
+    "Dog",
+    "dotrungkien",
+    "ikhadykin",
+    "kytrinyx",
+    "lowks",
+    "mpatibandla",
+    "N-Parsons",
+    "pheanex",
+    "sjakobi",
+    "tqa236"
+  ],
+  "files": {
+    "solution": [
+      "roman_numerals.py"
+    ],
+    "test": [
+      "roman_numerals_test.py"
+    ],
+    "example": [
+      ".meta/example.py"
+    ]
+  },
+  "blurb": "Convert modern Arabic numbers into Roman numerals.",
+  "source": "The Roman Numeral Kata",
+  "source_url": "https://codingdojo.org/kata/RomanNumerals/"
+}

python/roman-numerals/.exercism/metadata.json

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+{"track":"python","exercise":"roman-numerals","id":"b2e3805eaf16476da723e98d3992cf85","url":"https://exercism.org/tracks/python/exercises/roman-numerals","handle":"vpayno","is_requester":true,"auto_approve":false}

python/roman-numerals/HELP.md

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+# Help
+
+## Running the tests
+
+We use [pytest][pytest: Getting Started Guide] as our website test runner.
+You will need to install `pytest` on your development machine if you want to run tests for the Python track locally.
+You should also install the following `pytest` plugins:
+
+- [pytest-cache][pytest-cache]
+- [pytest-subtests][pytest-subtests]
+
+Extended information can be found in our website [Python testing guide][Python track tests page].
+
+
+### Running Tests
+
+To run the included tests, navigate to the folder where the exercise is stored using `cd` in your terminal (_replace `{exercise-folder-location}` below with your path_).
+Test files usually end in `_test.py`, and are the same tests that run on the website when a solution is uploaded.
+
+Linux/MacOS
+```bash
+$ cd {path/to/exercise-folder-location}
+```
+
+Windows
+```powershell
+PS C:\Users\foobar> cd {path\to\exercise-folder-location}
+```
+
+<br>
+
+Next, run the `pytest` command in your terminal, replacing `{exercise_test.py}` with the name of the test file:
+
+Linux/MacOS
+```bash
+$ python3 -m pytest -o markers=task {exercise_test.py}
+==================== 7 passed in 0.08s ====================
+```
+
+Windows
+```powershell
+PS C:\Users\foobar> py -m pytest -o markers=task {exercise_test.py}
+==================== 7 passed in 0.08s ====================
+```
+
+
+### Common options
+- `-o` : override default `pytest.ini` (_you can use this to avoid marker warnings_)
+- `-v` : enable verbose output.
+- `-x` : stop running tests on first failure.
+- `--ff` : run failures from previous test before running other test cases.
+
+For additional options, use `python3 -m pytest -h` or `py -m pytest -h`.
+
+
+### Fixing warnings
+
+If you do not use `pytest -o markers=task` when invoking `pytest`, you might receive a `PytestUnknownMarkWarning` for tests that use our new syntax:
+
+```bash
+PytestUnknownMarkWarning: Unknown pytest.mark.task - is this a typo?  You can register custom marks to avoid this warning - for details, see https://docs.pytest.org/en/stable/mark.html
+```
+
+To avoid typing `pytest -o markers=task` for every test you run, you can use a `pytest.ini` configuration file.
+We have made one that can be downloaded from the top level of the Python track directory: [pytest.ini][pytest.ini].
+
+You can also create your own `pytest.ini` file with the following content:
+
+```ini
+[pytest]
+markers =
+    task: A concept exercise task.
+```
+
+Placing the `pytest.ini` file in the _root_ or _working_ directory for your Python track exercises will register the marks and stop the warnings.
+More information on pytest marks can be found in the `pytest` documentation on [marking test functions][pytest: marking test functions with attributes] and the `pytest` documentation on [working with custom markers][pytest: working with custom markers].
+
+Information on customizing pytest configurations can be found in the `pytest` documentation on [configuration file formats][pytest: configuration file formats].
+
+
+### Extending your IDE or Code Editor
+
+Many IDEs and code editors have built-in support for using `pytest` and other code quality tools.
+Some community-sourced options can be found on our [Python track tools page][Python track tools page].
+
+[Pytest: Getting Started Guide]: https://docs.pytest.org/en/latest/getting-started.html
+[Python track tools page]: https://exercism.org/docs/tracks/python/tools
+[Python track tests page]: https://exercism.org/docs/tracks/python/tests
+[pytest-cache]:http://pythonhosted.org/pytest-cache/
+[pytest-subtests]:https://github.com/pytest-dev/pytest-subtests
+[pytest.ini]: https://github.com/exercism/python/blob/main/pytest.ini
+[pytest: configuration file formats]: https://docs.pytest.org/en/6.2.x/customize.html#configuration-file-formats
+[pytest: marking test functions with attributes]: https://docs.pytest.org/en/6.2.x/mark.html#raising-errors-on-unknown-marks
+[pytest: working with custom markers]: https://docs.pytest.org/en/6.2.x/example/markers.html#working-with-custom-markers
+
+## Submitting your solution
+
+You can submit your solution using the `exercism submit roman_numerals.py` command.
+This command will upload your solution to the Exercism website and print the solution page's URL.
+
+It's possible to submit an incomplete solution which allows you to:
+
+- See how others have completed the exercise
+- Request help from a mentor
+
+## Need to get help?
+
+If you'd like help solving the exercise, check the following pages:
+
+- The [Python track's documentation](https://exercism.org/docs/tracks/python)
+- The [Python track's programming category on the forum](https://forum.exercism.org/c/programming/python)
+- [Exercism's programming category on the forum](https://forum.exercism.org/c/programming/5)
+- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
+
+Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
+
+Below are some resources for getting help if you run into trouble:
+
+- [The PSF](https://www.python.org) hosts Python downloads, documentation, and community resources.
+- [The Exercism Community on Discord](https://exercism.org/r/discord)
+- [Python Community on Discord](https://pythondiscord.com/) is a very helpful and active community.
+- [/r/learnpython/](https://www.reddit.com/r/learnpython/) is a subreddit designed for Python learners.
+- [#python on Libera.chat](https://www.python.org/community/irc/) this is where the core developers for the language hang out and get work done.
+- [Python Community Forums](https://discuss.python.org/)
+- [Free Code Camp Community Forums](https://forum.freecodecamp.org/)
+- [CodeNewbie Community Help Tag](https://community.codenewbie.org/t/help)
+- [Pythontutor](http://pythontutor.com/) for stepping through small code snippets visually.
+
+Additionally, [StackOverflow](http://stackoverflow.com/questions/tagged/python) is a good spot to search for your problem/question to see if it has been answered already.
+ If not - you can always [ask](https://stackoverflow.com/help/how-to-ask) or [answer](https://stackoverflow.com/help/how-to-answer) someone else's question.

python/roman-numerals/README.md

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+# Roman Numerals
+
+Welcome to Roman Numerals on Exercism's Python Track.
+If you need help running the tests or submitting your code, check out `HELP.md`.
+
+## Introduction
+
+Today, most people in the world use Arabic numerals (0–9).
+But if you travelled back two thousand years, you'd find that most Europeans were using Roman numerals instead.
+
+To write a Roman numeral we use the following Latin letters, each of which has a value:
+
+| M    | D   | C   | L   | X   | V   | I   |
+| ---- | --- | --- | --- | --- | --- | --- |
+| 1000 | 500 | 100 | 50  | 10  | 5   | 1   |
+
+A Roman numeral is a sequence of these letters, and its value is the sum of the letters' values.
+For example, `XVIII` has the value 18 (`10 + 5 + 1 + 1 + 1 = 18`).
+
+There's one rule that makes things trickier though, and that's that **the same letter cannot be used more than three times in succession**.
+That means that we can't express numbers such as 4 with the seemingly natural `IIII`.
+Instead, for those numbers, we use a subtraction method between two letters.
+So we think of `4` not as `1 + 1 + 1 + 1` but instead as `5 - 1`.
+And slightly confusingly to our modern thinking, we write the smaller number first.
+This applies only in the following cases: 4 (`IV`), 9 (`IX`), 40 (`XL`), 90 (`XC`), 400 (`CD`) and 900 (`CM`).
+
+Order matters in Roman numerals!
+Letters (and the special compounds above) must be ordered by decreasing value from left to right.
+
+Here are some examples:
+
+```text
+ 105 => CV
+---- => --
+ 100 => C
++  5 =>  V
+```
+
+```text
+ 106 => CVI
+---- => --
+ 100 => C
++  5 =>  V
++  1 =>   I
+```
+
+```text
+ 104 => CIV
+---- => ---
+ 100 => C
++  4 =>  IV
+```
+
+And a final more complex example:
+
+```text
+ 1996 => MCMXCVI
+----- => -------
+ 1000 => M
++ 900 =>  CM
++  90 =>    XC
++   5 =>      V
++   1 =>       I
+```
+
+## Instructions
+
+Your task is to convert a number from Arabic numerals to Roman numerals.
+
+For this exercise, we are only concerned about traditional Roman numerals, in which the largest number is MMMCMXCIX (or 3,999).
+
+~~~~exercism/note
+There are lots of different ways to convert between Arabic and Roman numerals.
+We recommend taking a naive approach first to familiarise yourself with the concept of Roman numerals and then search for more efficient methods.
+
+Make sure to check out our Deep Dive video at the end to explore the different approaches you can take!
+~~~~
+
+## Source
+
+### Contributed to by
+
+- @behrtam
+- @BethanyG
+- @cmccandless
+- @Dog
+- @dotrungkien
+- @ikhadykin
+- @kytrinyx
+- @lowks
+- @mpatibandla
+- @N-Parsons
+- @pheanex
+- @sjakobi
+- @tqa236
+
+### Based on
+
+The Roman Numeral Kata - https://codingdojo.org/kata/RomanNumerals/

python/roman-numerals/roman_numerals.py

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+def roman(number):
+    pass
+

python/roman-numerals/roman_numerals_test.py

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+# These tests are auto-generated with test data from:
+# https://github.com/exercism/problem-specifications/tree/main/exercises/roman-numerals/canonical-data.json
+# File last updated on 2023-07-19
+
+import unittest
+
+from roman_numerals import (
+    roman,
+)
+
+
+class RomanNumeralsTest(unittest.TestCase):
+    def test_1_is_i(self):
+        self.assertEqual(roman(1), "I")
+
+    def test_2_is_ii(self):
+        self.assertEqual(roman(2), "II")
+
+    def test_3_is_iii(self):
+        self.assertEqual(roman(3), "III")
+
+    def test_4_is_iv(self):
+        self.assertEqual(roman(4), "IV")
+
+    def test_5_is_v(self):
+        self.assertEqual(roman(5), "V")
+
+    def test_6_is_vi(self):
+        self.assertEqual(roman(6), "VI")
+
+    def test_9_is_ix(self):
+        self.assertEqual(roman(9), "IX")
+
+    def test_16_is_xvi(self):
+        self.assertEqual(roman(16), "XVI")
+
+    def test_27_is_xxvii(self):
+        self.assertEqual(roman(27), "XXVII")
+
+    def test_48_is_xlviii(self):
+        self.assertEqual(roman(48), "XLVIII")
+
+    def test_49_is_xlix(self):
+        self.assertEqual(roman(49), "XLIX")
+
+    def test_59_is_lix(self):
+        self.assertEqual(roman(59), "LIX")
+
+    def test_66_is_lxvi(self):
+        self.assertEqual(roman(66), "LXVI")
+
+    def test_93_is_xciii(self):
+        self.assertEqual(roman(93), "XCIII")
+
+    def test_141_is_cxli(self):
+        self.assertEqual(roman(141), "CXLI")
+
+    def test_163_is_clxiii(self):
+        self.assertEqual(roman(163), "CLXIII")
+
+    def test_166_is_clxvi(self):
+        self.assertEqual(roman(166), "CLXVI")
+
+    def test_402_is_cdii(self):
+        self.assertEqual(roman(402), "CDII")
+
+    def test_575_is_dlxxv(self):
+        self.assertEqual(roman(575), "DLXXV")
+
+    def test_666_is_dclxvi(self):
+        self.assertEqual(roman(666), "DCLXVI")
+
+    def test_911_is_cmxi(self):
+        self.assertEqual(roman(911), "CMXI")
+
+    def test_1024_is_mxxiv(self):
+        self.assertEqual(roman(1024), "MXXIV")
+
+    def test_1666_is_mdclxvi(self):
+        self.assertEqual(roman(1666), "MDCLXVI")
+
+    def test_3000_is_mmm(self):
+        self.assertEqual(roman(3000), "MMM")
+
+    def test_3001_is_mmmi(self):
+        self.assertEqual(roman(3001), "MMMI")
+
+    def test_3999_is_mmmcmxcix(self):
+        self.assertEqual(roman(3999), "MMMCMXCIX")