Physics new code

[avivfaraj]

Describe your change:

Added new file to Physics folder. This file contain a function to calculate gamma function which is a common tool used in physics.

• Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Documentation change?

Checklist:

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• I know that pull requests will not be merged if they fail the automated tests.
• This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
• All new Python files are placed inside an existing directory.
• All filenames are in all lowercase characters with no spaces or dashes.
• All functions and variable names follow Python naming conventions.
• All function parameters and return values are annotated with Python type hints.
• All functions have doctests that pass the automated testing.
• All new algorithms have a URL in its comments that points to Wikipedia or other similar explanation.
• If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.

[ghost]

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🔗 Relevant Links

Repository:

• Contributing guidelines
• Project Euler solution guidelines

Python:

• Formatted string literals (f-strings)
• Type hints
• doctest
• unittest
• pytest

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[Rohit-wed]

Wait for me do list is endless

…

On Sat, Sep 4, 2021, 5:27 AM algorithms-keeper[bot] < ***@***.***> wrote: ***@***.***[bot]* commented on this pull request. *Click here to look at the relevant links ⬇️* 🔗 Relevant Links Repository: - Contributing guidelines <https://github.com/TheAlgorithms/Python/blob/master/CONTRIBUTING.md> - Project Euler solution guidelines <https://github.com/TheAlgorithms/Python/blob/master/project_euler/README.md> Python: - Formatted string literals (f-strings) <https://docs.python.org/3/tutorial/inputoutput.html#tut-f-strings> - Type hints <https://docs.python.org/3/library/typing.html> - doctest <https://docs.python.org/3/library/doctest.html> - unittest <https://docs.python.org/3/library/unittest.html> - pytest <https://docs.pytest.org/en/stable/> Automated review generated by algorithms-keeper <https://github.com/dhruvmanila/algorithms-keeper>. If there's any problem regarding this review, please open an issue about it. <https://github.com/dhruvmanila/algorithms-keeper/issues> ------------------------------ algorithms-keeper commands and options algorithms-keeper actions can be triggered by commenting on this PR: - @algorithms-keeper review to trigger the checks for only added pull request files - @algorithms-keeper review-all to trigger the checks for all the pull request files, including the modified files. As we cannot post review comments on lines not part of the diff, this command will post all the messages in one comment. NOTE: Commands are in beta and so this feature is restricted only to a member or owner of the organization. ------------------------------ In physics/gamma_function.py <#4709 (comment)>: > + raise ValueError + # Ensure print an error message + except ValueError: + print("Invalid input: Must be an integer or an half-integer!") + number = False + finally: + # Ensure input is a valid number + if number: + # Ensure input is an integer + if (isinstance(gamma(num), int)): + # Print result + print(gamma(num)) + # Otherwise print results with √π (gamma of 0.5 is √π) + # Therefore all results will be a number times √π + else: + results = "{result:.4f}".format(result=gamma(num) / sqrt(pi)) As mentioned in the Contributing Guidelines <https://github.com/TheAlgorithms/Python/blob/master/CONTRIBUTING.md>, please do not use printf style formatting or str.format(). Use f-string <https://realpython.com/python-f-strings/> instead to be more readable and efficient. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#4709 (review)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AQQ66J4HJLBIATHBQNMFVX3UAFOGPANCNFSM5DMUVRRA> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

[QuantumNovice]

One last request.
Can you rename the file to gamma_recursive.py and add it under maths directory?
We already have a gamma function based on quadrature. That seems like a suitable directory for it.

Good Work.👍 👍 👍

[avivfaraj]

One last request.
Can you rename the file to gamma_recursive.py and add it under maths directory?
We already have a gamma function based on quadrature. That seems like a suitable directory for it.

Good Work.👍 👍 👍

Done.

Thank You.

[QuantumNovice]

@cclauss have a look at this.

[SayanMaity234]

It is working

[cclauss]

Nice work. I modified the exceptions to more closely mimic the Python's Standard Library math.gamma() function.

[Dummy59]

cecf43d

[cclauss]

@Dummy59 Can you please explain what was done here?