Merge from master

inventory-management/.exercism/config.json

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+{
+  "authors": [
+    "j08k"
+  ],
+  "contributors": [
+    "valentin-p",
+    "bethanyG",
+    "mukeshgurpude",
+    "kotp"
+  ],
+  "files": {
+    "solution": [
+      "dicts.py"
+    ],
+    "test": [
+      "dicts_test.py"
+    ],
+    "exemplar": [
+      ".meta/exemplar.py"
+    ]
+  },
+  "icon": "high-scores",
+  "blurb": "Learn about dicts by managing warehouse inventory."
+}

inventory-management/.exercism/metadata.json

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+{"track":"python","exercise":"inventory-management","id":"39327930b14540e989ef273f25554fa2","url":"https://exercism.org/tracks/python/exercises/inventory-management","handle":"myFirstCode","is_requester":true,"auto_approve":false}

inventory-management/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 dicts.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.

inventory-management/HINTS.md

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+# Hints
+
+## General
+
+- [The Python Dictionary Tutorial][dict-tutorial] can be a great place to start.
+- The Python docs on [Mapping Types - dicts][dict docs] is also pretty helpful.
+
+## 1. Create an inventory based on a list
+
+- You need a [for loop][for-loop] to iterate the list of items, then insert each item in the dictionary if missing and increment the item count using the dictionary accessor.
+- You can use [`dict.setdefault`][dict setdefault] to make sure the value is set before incrementing the count of the item.
+- This function should [return][return-keyword] a dict].
+
+## 2. Add items from a list to an existing dictionary
+
+- You need a [for loop][for-loop] to iterate the list of items, then insert each item if not already in the dictionary and [increment][increment] the item count using the dictionary accessor.
+- You can use [`dict.setdefault`][dict setdefault] to make sure the value is set before incrementing the count of the item.
+- The function `add_items` can be used by the `create_inventory` function with an empty dictionary in parameter.
+- This function should [return][return-keyword] a dict.
+
+## 3. Decrement items from the inventory
+
+- You need [for loop][for-loop] to iterate the list of items, if the number of items is not `0` then [decrement][decrement] the current number of items.
+- You can use the check `key in dict` that returns `True` if the key exists to make sure the value is in the dictionary before decrementing the number of items.
+- This function should [return][return-keyword] a dict.
+
+## 4. Remove an item entirely from the inventory
+
+- If item is in the dictionary, [remove it][dict-pop].
+- If item is not in the dictionary, do nothing.
+- This function should [return][return-keyword] a dict.
+
+## 5. Return the inventory content
+
+- You need to use a [for loop][for-loop] on the inventory and if the number of item is greater of `0` then append the `tuple` to a `list`.
+- You can use [`dict.items()`][dict items] to iterate on both the item and the value at the same time, `items()` returns a `tuple` that you can use or deconstruct, if needed.
+- This function should [return][return-keyword] a [list][list] of [tuples][tuples].
+
+[decrement]: https://www.w3schools.com/python/gloss_python_assignment_operators.asp
+[dict docs]: https://docs.python.org/3/library/stdtypes.html#mapping-types-dict
+[dict items]: https://docs.python.org/3/library/stdtypes.html#dict.items
+[dict setdefault]: https://www.w3schools.com/python/ref_dictionary_setdefault.asp
+[dict-pop]: https://www.w3schools.com/python/ref_dictionary_pop.asp
+[dict-tutorial]: https://docs.python.org/3/tutorial/datastructures.html#dictionaries
+[for-loop]: https://docs.python.org/3/tutorial/controlflow.html#for-statements
+[increment]: https://www.w3schools.com/python/gloss_python_assignment_operators.asp
+[list]: https://docs.python.org/3/tutorial/introduction.html#lists
+[return-keyword]: https://www.w3schools.com/python/ref_keyword_return.asp
+[tuples]: https://docs.python.org/3/tutorial/datastructures.html#tuples-and-sequences