ejemplo en python

No me esforcé mucho en aplicar TDD. De hecho apliqué el método Obvious
Implementation a full.

A si que cabe aclarar que no le dediqué mucho tiempo al ejercicio, pero
haré igual la PR por si a alguien le sirve el ejemplo en python

Pero sí el ejercicio me sirvió para empezar, de partida a generar el
setup para un proyecto con test en python y tambien a hacer mis primeros test en
Python :raising_hands: Muchas gracias.

Author: ElWazy

exercises/tiered_pricing/solutions/elwazy-python/.gitignore

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+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/latest/usage/project/#working-with-version-control
+.pdm.toml
+.pdm-python
+.pdm-build/
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/

exercises/tiered_pricing/solutions/elwazy-python/README.md

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+from dataclasses import dataclass
+
+
+@dataclass
+class License:
+    amount: int = 0
+
+    def total(self) -> int:
+        price = self.amount * self._price_calculator()
+        return price
+
+    def _price_calculator(self) -> int:
+        match self.amount:
+            case self.amount if self.amount <= 0:
+                raise Exception("should be minimun 1 license!")
+            case self.amount if self.amount <= 2:
+                price = 299
+            case self.amount if self.amount <= 10:
+                price = 239
+            case self.amount if self.amount <= 25:
+                price = 219
+            case self.amount if self.amount <= 50:
+                price = 199
+            case _:
+                price = 149
+        return price

exercises/tiered_pricing/solutions/elwazy-python/elwazy_python/__init__.py

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+[tool.poetry]
+name = "elwazy-python"
+version = "0.1.0"
+description = "Tiered Pricing Exercise with TDD"
+authors = ["ElWazy"]
+readme = "README.md"
+package-mode = false
+
+[tool.poetry.dependencies]
+python = "^3.12"
+
+[tool.poetry.group.test.dependencies]
+pytest = "^8.2.2"
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"

exercises/tiered_pricing/solutions/elwazy-python/elwazy_python/license.py

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+from typing import reveal_type
+from elwazy_python.license import License
+
+
+def test_buy_one_license_price_calculation():
+    license = License(amount=1)
+    assert license.total() == 299
+
+
+def test_buy_two_license_price_calculation():
+    license = License(amount=2)
+    assert license._price_calculator() == 299
+    assert license.total() == 598
+
+
+def test_should_work_well_license_price_calculation():
+    amounts = [
+        (1, 299),
+        (2, 299),
+        (3, 239),
+        (5, 239),
+        (10, 239),
+        (12, 219),
+        (24, 219),
+        (25, 219),
+        (50, 199),
+        (78, 149),
+    ]
+    for amount, price in amounts:
+        license = License(amount)
+        assert license._price_calculator() == price