write doctest & unittest

Author: rezamobaraki

.gitignore

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+
+# Created by https://www.toptal.com/developers/gitignore/api/python
+# Edit at https://www.toptal.com/developers/gitignore?templates=python
+
+.idea
+### Python ###
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+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.
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+*.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/
+pytestdebug.log
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
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+# Sphinx documentation
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+doc/_build/
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+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.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
+#poetry.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+# .env
+.env/
+.venv/
+env/
+venv/
+ENV/
+env.bak/
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+pythonenv*
+
+# Spyder project settings
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+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
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+# End of https://www.toptal.com/developers/gitignore/api/python
+n

doctest_sample.py

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+def add(x, y):
+    """
+    >>> add(3, 4)
+    7
+    >>> add(4, -1)
+    3
+    >>> add(0, 5)
+    5
+    """
+    return x + y
+
+
+def subtract(x, y):
+    """
+    >>> subtract(3, 4)
+    -1
+    >>> subtract(4, -1)
+    5
+    >>> subtract(6, 5)
+    1
+    """
+    return x - y
+
+
+def multiply(x, y):
+    """
+      >>> multiply(2, 4)
+      8
+      >>> multiply(4, -1)
+      -4
+      >>> multiply(2, 'reza')
+      'rezareza'
+    """
+    return x * y

main.py

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+ # This is a sample Python script.
+
+# Press ⌃R to execute it or replace it with your code.
+# Press Double ⇧ to search everywhere for classes, files, tool windows, actions, and settings.
+
+
+def print_hi(name):
+    # Use a breakpoint in the code line below to debug your script.
+    print(f'Hi, {name}')  # Press ⌘F8 to toggle the breakpoint.
+
+
+# Press the green button in the gutter to run the script.
+if __name__ == '__main__':
+    print_hi('PyCharm')
+
+# See PyCharm help at https://www.jetbrains.com/help/pycharm/

sample_func.py

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+def add(x, y):
+    return x + y
+
+
+def subtract(x, y):
+    return x - y
+
+
+def multiply(x, y):
+    return x * y
+
+
+def division(x, y):
+    if y == 0:
+        raise ZeroDivisionError("cant divide by zero. . .")
+    return x / y

test_sample_func.py

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+import unittest
+
+from sample_func import add, subtract, multiply, division
+
+
+class OneTest(unittest.TestCase):
+    def test_add(self):
+        self.assertEqual(add(4, 9), 13)
+        self.assertEqual(add(-3, 9), 6)
+
+    def test_subtract(self):
+        self.assertEqual(subtract(4, 9), -5)
+        self.assertEqual(subtract(-3, 9), -12)
+
+    def test_multiply(self):
+        self.assertEqual(multiply(4, 9), 36)
+        self.assertEqual(multiply(-3, 9), -27)
+
+    def test_division(self):
+        self.assertEqual(round(division(4, 9)), 0)
+        self.assertEqual(division(18, 9), 2)
+        self.assertRaises(ZeroDivisionError, division, 4, 0)
+
+
+if __name__ == '__main__':
+    unittest.main()