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32 changes: 32 additions & 0 deletions raindrops/.exercism/config.json
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{
"authors": [],
"contributors": [
"behrtam",
"BethanyG",
"bsoyka",
"cmccandless",
"Dog",
"ikhadykin",
"kytrinyx",
"lowks",
"N-Parsons",
"pheanex",
"sjakobi",
"tqa236",
"yawpitch"
],
"files": {
"solution": [
"raindrops.py"
],
"test": [
"raindrops_test.py"
],
"example": [
".meta/example.py"
]
},
"blurb": "Convert a number into its corresponding raindrop sounds - Pling, Plang and Plong.",
"source": "A variation on FizzBuzz, a famous technical interview question that is intended to weed out potential candidates. That question is itself derived from Fizz Buzz, a popular children's game for teaching division.",
"source_url": "https://en.wikipedia.org/wiki/Fizz_buzz"
}
1 change: 1 addition & 0 deletions raindrops/.exercism/metadata.json
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{"track":"python","exercise":"raindrops","id":"103a95f5c6a4404ab943991a3ebd367b","url":"https://exercism.org/tracks/python/exercises/raindrops","handle":"myFirstCode","is_requester":true,"auto_approve":false}
130 changes: 130 additions & 0 deletions raindrops/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 raindrops.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.
75 changes: 75 additions & 0 deletions raindrops/README.md
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# Raindrops

Welcome to Raindrops on Exercism's Python Track.
If you need help running the tests or submitting your code, check out `HELP.md`.

## Introduction

Raindrops is a slightly more complex version of the FizzBuzz challenge, a classic interview question.

## Instructions

Your task is to convert a number into its corresponding raindrop sounds.

If a given number:

- is divisible by 3, add "Pling" to the result.
- is divisible by 5, add "Plang" to the result.
- is divisible by 7, add "Plong" to the result.
- **is not** divisible by 3, 5, or 7, the result should be the number as a string.

## Examples

- 28 is divisible by 7, but not 3 or 5, so the result would be `"Plong"`.
- 30 is divisible by 3 and 5, but not 7, so the result would be `"PlingPlang"`.
- 34 is not divisible by 3, 5, or 7, so the result would be `"34"`.

~~~~exercism/note
A common way to test if one number is evenly divisible by another is to compare the [remainder][remainder] or [modulus][modulo] to zero.
Most languages provide operators or functions for one (or both) of these.

[remainder]: https://exercism.org/docs/programming/operators/remainder
[modulo]: https://en.wikipedia.org/wiki/Modulo_operation
~~~~

## How this Exercise is Structured in Python

This exercise is best solved with Python's `%` ([modulo][modulo]) operator, which returns the remainder of positive integer division.
It has a method equivalent, `operator.mod()` in the [operator module][operator-mod].


Python also offers additional 'remainder' methods in the [math module][math-module].
[`math.fmod()`][fmod] behaves like `%`, but operates on floats.
[`math.remainder()`][remainder] implements a "step closest to zero" algorithm for the remainder of division.
While we encourage you to get familiar with these methods, neither of these will exactly match the result of `%`, and are not recommended for use with this exercise.

The built-in function [`divmod()`][divmod] will also give a remainder than matches `%` if used with two positive integers, but returns a `tuple` that needs to be unpacked.

[divmod]: https://docs.python.org/3/library/functions.html#divmod
[fmod]: https://docs.python.org/3/library/math.html#math.fmod
[math-module]: https://docs.python.org/3/library/math.html
[modulo]: https://www.programiz.com/python-programming/operators#arithmetic
[operator-mod]: https://docs.python.org/3/library/operator.html#operator.mod
[remainder]: https://docs.python.org/3/library/math.html#math.remainder

## Source

### Contributed to by

- @behrtam
- @BethanyG
- @bsoyka
- @cmccandless
- @Dog
- @ikhadykin
- @kytrinyx
- @lowks
- @N-Parsons
- @pheanex
- @sjakobi
- @tqa236
- @yawpitch

### Based on

A variation on FizzBuzz, a famous technical interview question that is intended to weed out potential candidates. That question is itself derived from Fizz Buzz, a popular children's game for teaching division. - https://en.wikipedia.org/wiki/Fizz_buzz
38 changes: 38 additions & 0 deletions raindrops/raindrops.py
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"""
Introduction

Raindrops is a slightly more complex version of the FizzBuzz challenge,
a classic interview question.

Instructions

Your task is to convert a number into its corresponding raindrop sounds.

If a given number:

is divisible by 3, add "Pling" to the result.
is divisible by 5, add "Plang" to the result.
is divisible by 7, add "Plong" to the result.
is not divisible by 3, 5, or 7, the result should be the number as a string.
"""


def convert(number: int) -> str:
"""
Convert a number into its corresponding raindrop sounds.

:param number:
:return:
"""
result: str = ""
# is divisible by 3, add "Pling" to the result.
if number % 3 == 0:
result += "Pling"
# is divisible by 5, add "Plang" to the result.
if number % 5 == 0:
result += "Plang"
# is divisible by 7, add "Plong" to the result.
if number % 7 == 0:
result += "Plong"
# is not divisible by 3, 5, or 7, the result should be the number as a string.
return result if result else str(number)
69 changes: 69 additions & 0 deletions raindrops/raindrops_test.py
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# pylint: disable=C0114, C0115, C0116, R0904

# These tests are auto-generated with test data from:
# https://github.com/exercism/problem-specifications/tree/main/exercises/raindrops/canonical-data.json
# File last updated on 2023-07-19

import unittest

from raindrops import (
convert,
)


class RaindropsTest(unittest.TestCase):
def test_the_sound_for_1_is_1(self):
self.assertEqual(convert(1), "1")

def test_the_sound_for_3_is_pling(self):
self.assertEqual(convert(3), "Pling")

def test_the_sound_for_5_is_plang(self):
self.assertEqual(convert(5), "Plang")

def test_the_sound_for_7_is_plong(self):
self.assertEqual(convert(7), "Plong")

def test_the_sound_for_6_is_pling_as_it_has_a_factor_3(self):
self.assertEqual(convert(6), "Pling")

def test_2_to_the_power_3_does_not_make_a_raindrop_sound_as_3_is_the_exponent_not_the_base(
self,
):
self.assertEqual(convert(8), "8")

def test_the_sound_for_9_is_pling_as_it_has_a_factor_3(self):
self.assertEqual(convert(9), "Pling")

def test_the_sound_for_10_is_plang_as_it_has_a_factor_5(self):
self.assertEqual(convert(10), "Plang")

def test_the_sound_for_14_is_plong_as_it_has_a_factor_of_7(self):
self.assertEqual(convert(14), "Plong")

def test_the_sound_for_15_is_pling_plang_as_it_has_factors_3_and_5(self):
self.assertEqual(convert(15), "PlingPlang")

def test_the_sound_for_21_is_pling_plong_as_it_has_factors_3_and_7(self):
self.assertEqual(convert(21), "PlingPlong")

def test_the_sound_for_25_is_plang_as_it_has_a_factor_5(self):
self.assertEqual(convert(25), "Plang")

def test_the_sound_for_27_is_pling_as_it_has_a_factor_3(self):
self.assertEqual(convert(27), "Pling")

def test_the_sound_for_35_is_plang_plong_as_it_has_factors_5_and_7(self):
self.assertEqual(convert(35), "PlangPlong")

def test_the_sound_for_49_is_plong_as_it_has_a_factor_7(self):
self.assertEqual(convert(49), "Plong")

def test_the_sound_for_52_is_52(self):
self.assertEqual(convert(52), "52")

def test_the_sound_for_105_is_pling_plang_plong_as_it_has_factors_3_5_and_7(self):
self.assertEqual(convert(105), "PlingPlangPlong")

def test_the_sound_for_3125_is_plang_as_it_has_a_factor_5(self):
self.assertEqual(convert(3125), "Plang")