primeiro commit com exercicios de Exercism realizados até esta data
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{
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"authors": [
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"pheanex"
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],
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"contributors": [
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"BethanyG",
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"cmccandless",
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"Dog",
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"K4cePhoenix",
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"sukovanej",
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"tqa236"
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],
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"files": {
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"solution": [
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"armstrong_numbers.py"
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],
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"test": [
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"armstrong_numbers_test.py"
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],
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"example": [
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".meta/example.py"
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]
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},
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"blurb": "Determine if a number is an Armstrong number.",
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"source": "Wikipedia",
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"source_url": "https://en.wikipedia.org/wiki/Narcissistic_number"
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}
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{"track":"python","exercise":"armstrong-numbers","id":"638a18575d6e4c5cb072d8f6d5dfe702","url":"https://exercism.org/tracks/python/exercises/armstrong-numbers","handle":"sanctushck","is_requester":true,"auto_approve":false}
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# Help
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## Running the tests
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We use [pytest][pytest: Getting Started Guide] as our website test runner.
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You will need to install `pytest` on your development machine if you want to run tests for the Python track locally.
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You should also install the following `pytest` plugins:
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- [pytest-cache][pytest-cache]
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- [pytest-subtests][pytest-subtests]
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Extended information can be found in our website [Python testing guide][Python track tests page].
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### Running Tests
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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_).
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Test files usually end in `_test.py`, and are the same tests that run on the website when a solution is uploaded.
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Linux/MacOS
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```bash
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$ cd {path/to/exercise-folder-location}
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```
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Windows
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```powershell
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PS C:\Users\foobar> cd {path\to\exercise-folder-location}
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```
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<br>
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Next, run the `pytest` command in your terminal, replacing `{exercise_test.py}` with the name of the test file:
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Linux/MacOS
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```bash
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$ python3 -m pytest -o markers=task {exercise_test.py}
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==================== 7 passed in 0.08s ====================
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```
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Windows
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```powershell
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PS C:\Users\foobar> py -m pytest -o markers=task {exercise_test.py}
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==================== 7 passed in 0.08s ====================
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```
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### Common options
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- `-o` : override default `pytest.ini` (_you can use this to avoid marker warnings_)
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- `-v` : enable verbose output.
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- `-x` : stop running tests on first failure.
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- `--ff` : run failures from previous test before running other test cases.
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For additional options, use `python3 -m pytest -h` or `py -m pytest -h`.
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### Fixing warnings
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If you do not use `pytest -o markers=task` when invoking `pytest`, you might receive a `PytestUnknownMarkWarning` for tests that use our new syntax:
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```bash
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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
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```
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To avoid typing `pytest -o markers=task` for every test you run, you can use a `pytest.ini` configuration file.
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We have made one that can be downloaded from the top level of the Python track directory: [pytest.ini][pytest.ini].
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You can also create your own `pytest.ini` file with the following content:
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```ini
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[pytest]
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markers =
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task: A concept exercise task.
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```
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Placing the `pytest.ini` file in the _root_ or _working_ directory for your Python track exercises will register the marks and stop the warnings.
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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].
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Information on customizing pytest configurations can be found in the `pytest` documentation on [configuration file formats][pytest: configuration file formats].
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### Extending your IDE or Code Editor
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Many IDEs and code editors have built-in support for using `pytest` and other code quality tools.
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Some community-sourced options can be found on our [Python track tools page][Python track tools page].
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[Pytest: Getting Started Guide]: https://docs.pytest.org/en/latest/getting-started.html
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[Python track tools page]: https://exercism.org/docs/tracks/python/tools
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[Python track tests page]: https://exercism.org/docs/tracks/python/tests
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[pytest-cache]:http://pythonhosted.org/pytest-cache/
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[pytest-subtests]:https://github.com/pytest-dev/pytest-subtests
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[pytest.ini]: https://github.com/exercism/python/blob/main/pytest.ini
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[pytest: configuration file formats]: https://docs.pytest.org/en/6.2.x/customize.html#configuration-file-formats
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[pytest: marking test functions with attributes]: https://docs.pytest.org/en/6.2.x/mark.html#raising-errors-on-unknown-marks
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[pytest: working with custom markers]: https://docs.pytest.org/en/6.2.x/example/markers.html#working-with-custom-markers
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## Submitting your solution
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You can submit your solution using the `exercism submit armstrong_numbers.py` command.
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This command will upload your solution to the Exercism website and print the solution page's URL.
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It's possible to submit an incomplete solution which allows you to:
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- See how others have completed the exercise
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- Request help from a mentor
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## Need to get help?
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If you'd like help solving the exercise, check the following pages:
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- The [Python track's documentation](https://exercism.org/docs/tracks/python)
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- The [Python track's programming category on the forum](https://forum.exercism.org/c/programming/python)
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- [Exercism's programming category on the forum](https://forum.exercism.org/c/programming/5)
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- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
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Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
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Below are some resources for getting help if you run into trouble:
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- [The PSF](https://www.python.org) hosts Python downloads, documentation, and community resources.
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- [The Exercism Community on Discord](https://exercism.org/r/discord)
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- [Python Community on Discord](https://pythondiscord.com/) is a very helpful and active community.
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- [/r/learnpython/](https://www.reddit.com/r/learnpython/) is a subreddit designed for Python learners.
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- [#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.
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- [Python Community Forums](https://discuss.python.org/)
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- [Free Code Camp Community Forums](https://forum.freecodecamp.org/)
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- [CodeNewbie Community Help Tag](https://community.codenewbie.org/t/help)
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- [Pythontutor](http://pythontutor.com/) for stepping through small code snippets visually.
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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.
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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.
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# Armstrong Numbers
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Welcome to Armstrong Numbers on Exercism's Python Track.
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If you need help running the tests or submitting your code, check out `HELP.md`.
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## Instructions
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An [Armstrong number][armstrong-number] is a number that is the sum of its own digits each raised to the power of the number of digits.
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For example:
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- 9 is an Armstrong number, because `9 = 9^1 = 9`
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- 10 is _not_ an Armstrong number, because `10 != 1^2 + 0^2 = 1`
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- 153 is an Armstrong number, because: `153 = 1^3 + 5^3 + 3^3 = 1 + 125 + 27 = 153`
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- 154 is _not_ an Armstrong number, because: `154 != 1^3 + 5^3 + 4^3 = 1 + 125 + 64 = 190`
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Write some code to determine whether a number is an Armstrong number.
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[armstrong-number]: https://en.wikipedia.org/wiki/Narcissistic_number
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## Source
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### Created by
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- @pheanex
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### Contributed to by
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- @BethanyG
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- @cmccandless
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- @Dog
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- @K4cePhoenix
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- @sukovanej
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- @tqa236
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### Based on
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Wikipedia - https://en.wikipedia.org/wiki/Narcissistic_number
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def is_armstrong_number(number):
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literal: str = str(number)
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nr_digits: int = len(literal)
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sum_of_digits: int = 0
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for pos in range(nr_digits):
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sum_of_digits += int(literal[pos]) ** nr_digits
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return sum_of_digits == number
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# These tests are auto-generated with test data from:
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# https://github.com/exercism/problem-specifications/tree/main/exercises/armstrong-numbers/canonical-data.json
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# File last updated on 2023-07-20
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import unittest
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from armstrong_numbers import (
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is_armstrong_number,
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)
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class ArmstrongNumbersTest(unittest.TestCase):
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def test_zero_is_an_armstrong_number(self):
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self.assertIs(is_armstrong_number(0), True)
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def test_single_digit_numbers_are_armstrong_numbers(self):
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self.assertIs(is_armstrong_number(5), True)
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def test_there_are_no_two_digit_armstrong_numbers(self):
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self.assertIs(is_armstrong_number(10), False)
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def test_three_digit_number_that_is_an_armstrong_number(self):
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self.assertIs(is_armstrong_number(153), True)
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def test_three_digit_number_that_is_not_an_armstrong_number(self):
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self.assertIs(is_armstrong_number(100), False)
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def test_four_digit_number_that_is_an_armstrong_number(self):
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self.assertIs(is_armstrong_number(9474), True)
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def test_four_digit_number_that_is_not_an_armstrong_number(self):
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self.assertIs(is_armstrong_number(9475), False)
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def test_seven_digit_number_that_is_an_armstrong_number(self):
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self.assertIs(is_armstrong_number(9926315), True)
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def test_seven_digit_number_that_is_not_an_armstrong_number(self):
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self.assertIs(is_armstrong_number(9926314), False)
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