From bc9e292269c2895e727d2bc28c11a7de7bb182cc Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 13:45:12 +0300 Subject: [PATCH 01/20] Formatting --- test/test_luhn.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/test/test_luhn.py b/test/test_luhn.py index 1c021a2..9b8b3b1 100644 --- a/test/test_luhn.py +++ b/test/test_luhn.py @@ -6,4 +6,4 @@ def test_good(): def test_bad(): - assert not luhnСheck("4561 2612 1234 5463") \ No newline at end of file + assert not luhnСheck("4561 2612 1234 5463") From 2917e7c0577dd303ec683f2658cb77b5dc3178a5 Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 13:45:56 +0300 Subject: [PATCH 02/20] Use snake_case for function names --- src/fast_pow.py | 2 +- src/luhn.py | 4 ++-- test/test_fast_pow.py | 6 +++--- test/test_luhn.py | 6 +++--- 4 files changed, 9 insertions(+), 9 deletions(-) diff --git a/src/fast_pow.py b/src/fast_pow.py index 1ba1dc1..755e207 100644 --- a/src/fast_pow.py +++ b/src/fast_pow.py @@ -1,4 +1,4 @@ -def fastPow(number, power): +def fast_pow(number, power): result = number while power != 1: result *= result diff --git a/src/luhn.py b/src/luhn.py index 11d993c..da0f897 100644 --- a/src/luhn.py +++ b/src/luhn.py @@ -1,5 +1,5 @@ -def luhnСheck(cardNumber): - digits = [int(d) for d in str(cardNumber) if d.isdigit()] +def luhn_check(card_number): + digits = [int(d) for d in str(card_number) if d.isdigit()] control = digits.pop() parity = (len(digits))%2 total = 0 diff --git a/test/test_fast_pow.py b/test/test_fast_pow.py index 5e4aebd..aa91d54 100644 --- a/test/test_fast_pow.py +++ b/test/test_fast_pow.py @@ -1,9 +1,9 @@ -from src.fast_pow import fastPow +from src.fast_pow import fast_pow def test_two_power_two(): - assert fastPow(2, 2) == 4 + assert fast_pow(2, 2) == 4 def test_negative(): - assert fastPow(-1, 4) == 1 + assert fast_pow(-1, 4) == 1 diff --git a/test/test_luhn.py b/test/test_luhn.py index 9b8b3b1..d042e3d 100644 --- a/test/test_luhn.py +++ b/test/test_luhn.py @@ -1,9 +1,9 @@ -from src.luhn import luhnСheck +from src.luhn import luhn_check def test_good(): - assert luhnСheck("8571 2612 1234 5467") + assert luhn_check("8571 2612 1234 5467") def test_bad(): - assert not luhnСheck("4561 2612 1234 5463") + assert not luhn_check("4561 2612 1234 5463") From 3dd09c1dc1990a2ccc58252c198d1a20531cf72e Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 13:50:19 +0300 Subject: [PATCH 03/20] Add __init__ --- src/__init__.py | 4 ++++ 1 file changed, 4 insertions(+) create mode 100644 src/__init__.py diff --git a/src/__init__.py b/src/__init__.py new file mode 100644 index 0000000..cb59f68 --- /dev/null +++ b/src/__init__.py @@ -0,0 +1,4 @@ +from .fast_pow import fast_pow +from .luhn import luhn_check + +__all__ = [luhn_check, fast_pow] From 8b9db6dc5d9be8d679b99b82cb7359e6d68d1834 Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 13:50:26 +0300 Subject: [PATCH 04/20] Add LICENSE --- LICENSE | 621 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 621 insertions(+) create mode 100644 LICENSE diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..810fce6 --- /dev/null +++ b/LICENSE @@ -0,0 +1,621 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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Limitation of Liability. + + IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS +THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY +GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE +USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF +DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD +PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), +EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF +SUCH DAMAGES. + + 17. Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS From e45aa8db6be33fc4c17f2d0f3946405fa25f95ed Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 13:52:10 +0300 Subject: [PATCH 05/20] Add .gitignore --- .gitignore | 216 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 216 insertions(+) create mode 100644 .gitignore diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..e15106e --- /dev/null +++ b/.gitignore @@ -0,0 +1,216 @@ +# Byte-compiled / optimized / DLL files +__pycache__/ +*.py[codz] +*$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 + +# UV +# Similar to Pipfile.lock, it is generally recommended to include uv.lock in version control. +# This is especially recommended for binary packages to ensure reproducibility, and is more +# commonly ignored for libraries. +# uv.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 +# poetry.toml + +# pdm +# Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control. +# pdm recommends including project-wide configuration in pdm.toml, but excluding .pdm-python. +# https://pdm-project.org/en/latest/usage/project/#working-with-version-control +# pdm.lock +# pdm.toml +.pdm-python +.pdm-build/ + +# pixi +# Similar to Pipfile.lock, it is generally recommended to include pixi.lock in version control. +# pixi.lock +# Pixi creates a virtual environment in the .pixi directory, just like venv module creates one +# in the .venv directory. It is recommended not to include this directory in version control. +.pixi + +# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm +__pypackages__/ + +# Celery stuff +celerybeat-schedule +celerybeat.pid + +# Redis +*.rdb +*.aof +*.pid + +# RabbitMQ +mnesia/ +rabbitmq/ +rabbitmq-data/ + +# ActiveMQ +activemq-data/ + +# SageMath parsed files +*.sage.py + +# Environments +.env +.envrc +.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/ + +# Abstra +# Abstra is an AI-powered process automation framework. +# Ignore directories containing user credentials, local state, and settings. +# Learn more at https://abstra.io/docs +.abstra/ + +# Visual Studio Code +# Visual Studio Code specific template is maintained in a separate VisualStudioCode.gitignore +# that can be found at https://github.com/github/gitignore/blob/main/Global/VisualStudioCode.gitignore +# and can be added to the global gitignore or merged into this file. However, if you prefer, +# you could uncomment the following to ignore the entire vscode folder +# .vscode/ + +# Ruff stuff: +.ruff_cache/ + +# PyPI configuration file +.pypirc + +# Marimo +marimo/_static/ +marimo/_lsp/ +__marimo__/ + +# Streamlit +.streamlit/secrets.toml From 9c6817f23e8958aba0279f66be874e5388ee99ad Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 13:52:19 +0300 Subject: [PATCH 06/20] Add .python-version --- .python-version | 1 + 1 file changed, 1 insertion(+) create mode 100644 .python-version diff --git a/.python-version b/.python-version new file mode 100644 index 0000000..976544c --- /dev/null +++ b/.python-version @@ -0,0 +1 @@ +3.13.7 From daefb7e08114469da00e736246d04f3425ae9578 Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 14:00:39 +0300 Subject: [PATCH 07/20] Add checks to Luhn's algorithm --- src/luhn.py | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/src/luhn.py b/src/luhn.py index da0f897..9d2da09 100644 --- a/src/luhn.py +++ b/src/luhn.py @@ -1,5 +1,14 @@ def luhn_check(card_number): + if not all(x.isdigit() or x.isspace() for x in str(card_number)): + raise ValueError("card_number should only consist of numbers and whitespace characters") + spaces = sum(1 for x in str(card_number) if x.isspace()) + if spaces != 0 and spaces != 3: + raise ValueError("card_number should only have zero or three whitespace characters") + digits = [int(d) for d in str(card_number) if d.isdigit()] + if len(digits) != 16: + raise ValueError("card_number should have exactly 16 digits") + control = digits.pop() parity = (len(digits))%2 total = 0 From 53dff9f7b147648004d29dd4b4dd6f1743db9b33 Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 14:12:53 +0300 Subject: [PATCH 08/20] Add more specific checks to Luhn's algorithm --- src/luhn.py | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/luhn.py b/src/luhn.py index 9d2da09..afabfa3 100644 --- a/src/luhn.py +++ b/src/luhn.py @@ -1,9 +1,12 @@ def luhn_check(card_number): if not all(x.isdigit() or x.isspace() for x in str(card_number)): raise ValueError("card_number should only consist of numbers and whitespace characters") + spaces = sum(1 for x in str(card_number) if x.isspace()) if spaces != 0 and spaces != 3: raise ValueError("card_number should only have zero or three whitespace characters") + if spaces != 0 and not all(len(x) == 4 for x in card_number.split()): + raise ValueError("Each fragment should contain 4 digits") digits = [int(d) for d in str(card_number) if d.isdigit()] if len(digits) != 16: @@ -20,4 +23,5 @@ def luhn_check(card_number): total += doubled else: total += digits[i] + return (total + control) % 10 == 0 From 0b8e0f876b4cf309deb65618809c44c6c4d846a9 Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 14:13:31 +0300 Subject: [PATCH 09/20] Add more tests for Luhn's algorithms --- test/test_luhn.py | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/test/test_luhn.py b/test/test_luhn.py index d042e3d..3001226 100644 --- a/test/test_luhn.py +++ b/test/test_luhn.py @@ -1,6 +1,25 @@ +import pytest + from src.luhn import luhn_check +def test_only_whitespace(): + with pytest.raises(ValueError): + luhn_check("gnwejkvberiw5245425 4543") + + +def test_spacing(): + assert luhn_check("8571261212345467") + assert luhn_check("8571 2612 1234 5467") + with pytest.raises(ValueError): + assert luhn_check("857 12612 1 2345467") + assert luhn_check("8571 2612 123454 67") + assert luhn_check("85712612 1234 5467") + +def test_too_many_digits(): + with pytest.raises(ValueError): + assert luhn_check("11111111111111111111111111111") + def test_good(): assert luhn_check("8571 2612 1234 5467") From cc727bf5a2a6eef98ec996d0d9adae2fce2a67b4 Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 14:29:24 +0300 Subject: [PATCH 10/20] Replace fast_pow implementation. Built-in Python exponentiation is fast enough for most cases. It also works on non-integers, allowing for more versatility. --- src/fast_pow.py | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/src/fast_pow.py b/src/fast_pow.py index 755e207..3fa87b0 100644 --- a/src/fast_pow.py +++ b/src/fast_pow.py @@ -1,6 +1,2 @@ def fast_pow(number, power): - result = number - while power != 1: - result *= result - power = power // 2 - return result + return number ** power From 2129eef504801f1a7936b4a49cdd90fe43d43887 Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 14:30:27 +0300 Subject: [PATCH 11/20] Add more tests for fast_pow --- test/test_fast_pow.py | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/test/test_fast_pow.py b/test/test_fast_pow.py index aa91d54..a6c2829 100644 --- a/test/test_fast_pow.py +++ b/test/test_fast_pow.py @@ -4,6 +4,14 @@ def test_two_power_two(): assert fast_pow(2, 2) == 4 +def test_zero(): + assert all(fast_pow(1, x) == 1 for x in range(1, 100)) + assert all(fast_pow(x, 0) == 1 for x in range(1, 100)) + +def test_fuzzy(): + for x in range(1, 10): + for y in range(1, 10): + assert fast_pow(x, y) == x**y def test_negative(): assert fast_pow(-1, 4) == 1 From 189933fb9a18b58703e225941c41b3d54af83c6f Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 14:30:56 +0300 Subject: [PATCH 12/20] Increase test ranges --- test/test_fast_pow.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/test/test_fast_pow.py b/test/test_fast_pow.py index a6c2829..3e466c9 100644 --- a/test/test_fast_pow.py +++ b/test/test_fast_pow.py @@ -10,7 +10,7 @@ def test_zero(): def test_fuzzy(): for x in range(1, 10): - for y in range(1, 10): + for y in range(-10, 10): assert fast_pow(x, y) == x**y def test_negative(): From af9c997991bcb57fb0cd6d3e44ac8fcd6d361efb Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 14:32:11 +0300 Subject: [PATCH 13/20] Raising 0 to a negative power is prohibited --- test/test_fast_pow.py | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/test/test_fast_pow.py b/test/test_fast_pow.py index 3e466c9..46502bc 100644 --- a/test/test_fast_pow.py +++ b/test/test_fast_pow.py @@ -1,3 +1,5 @@ +import pytest + from src.fast_pow import fast_pow @@ -15,3 +17,7 @@ def test_fuzzy(): def test_negative(): assert fast_pow(-1, 4) == 1 + +def test_zero(): + with pytest.raises(ZeroDivisionError): + fast_pow(0, -5) From 7f23dcf3fc57df7fc8d39436f2ab8e9f82c4d19f Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 14:37:59 +0300 Subject: [PATCH 14/20] Implement a CLI utility --- src/luhn.py | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/src/luhn.py b/src/luhn.py index afabfa3..168ff4b 100644 --- a/src/luhn.py +++ b/src/luhn.py @@ -6,7 +6,7 @@ def luhn_check(card_number): if spaces != 0 and spaces != 3: raise ValueError("card_number should only have zero or three whitespace characters") if spaces != 0 and not all(len(x) == 4 for x in card_number.split()): - raise ValueError("Each fragment should contain 4 digits") + raise ValueError("Each fragment of card_number should contain 4 digits") digits = [int(d) for d in str(card_number) if d.isdigit()] if len(digits) != 16: @@ -25,3 +25,18 @@ def luhn_check(card_number): total += digits[i] return (total + control) % 10 == 0 + +if __name__ == "__main__": + while True: + number = input("Enter card number: ") + try: + result = luhn_check(number) + if result == -1: break + if result: print("correct") + else: print("incorrect") + break + except ValueError as e: + if 'card_number' in str(e): + print(str(e)) + else: + raise e From ce6be01071fef6cbd5b6c4554fdcbc09035438e5 Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 14:38:39 +0300 Subject: [PATCH 15/20] Fix command for exit --- src/luhn.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/luhn.py b/src/luhn.py index 168ff4b..08e2e5a 100644 --- a/src/luhn.py +++ b/src/luhn.py @@ -29,9 +29,9 @@ def luhn_check(card_number): if __name__ == "__main__": while True: number = input("Enter card number: ") + if number == "-1": break try: result = luhn_check(number) - if result == -1: break if result: print("correct") else: print("incorrect") break From de337b16d0fdbe2d56fe787f81651bd53eea586a Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 14:44:36 +0300 Subject: [PATCH 16/20] Fix Luhn's algorithm In the original implementation, parity checking was incorrect. I.e. when running the algorithm on 15 digits(+1 control), the algorithm would double wrong numbers. This was fixed by redoing the calculation method. --- src/luhn.py | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/src/luhn.py b/src/luhn.py index 08e2e5a..e62e76b 100644 --- a/src/luhn.py +++ b/src/luhn.py @@ -12,19 +12,17 @@ def luhn_check(card_number): if len(digits) != 16: raise ValueError("card_number should have exactly 16 digits") - control = digits.pop() parity = (len(digits))%2 total = 0 for i in range(len(digits)): + digit = digits[i] if i % 2 == parity: - doubled = digits[i] * 2 - if doubled > 9: - doubled -= 9 - total += doubled - else: - total += digits[i] + digit *= 2 + if digit > 9: + digit -= 9 + total += digit - return (total + control) % 10 == 0 + return total % 10 == 0 if __name__ == "__main__": while True: From 5f48773c81506cef7192e3ccf122c90060de165b Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 14:55:09 +0300 Subject: [PATCH 17/20] Add more tests for Luhn's algorithm --- test/test_luhn.py | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/test/test_luhn.py b/test/test_luhn.py index 3001226..55c1dad 100644 --- a/test/test_luhn.py +++ b/test/test_luhn.py @@ -9,8 +9,8 @@ def test_only_whitespace(): def test_spacing(): - assert luhn_check("8571261212345467") - assert luhn_check("8571 2612 1234 5467") + assert not luhn_check("8571261212345467") + assert not luhn_check("8571 2612 1234 5467") with pytest.raises(ValueError): assert luhn_check("857 12612 1 2345467") assert luhn_check("8571 2612 123454 67") @@ -21,8 +21,11 @@ def test_too_many_digits(): assert luhn_check("11111111111111111111111111111") def test_good(): - assert luhn_check("8571 2612 1234 5467") - + assert luhn_check("4263 9826 4026 9299") + assert luhn_check("4242 4242 4242 4242") + assert luhn_check("4539 3195 0343 6467") def test_bad(): - assert not luhn_check("4561 2612 1234 5463") + assert not luhn_check("4223 9826 4026 9299") + assert not luhn_check("4539 3195 0343 6476") + assert not luhn_check("8273 1232 7352 0569") From c3de80a8be531ef42e23ec7fc218e06dfa2fa66b Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 14:56:54 +0300 Subject: [PATCH 18/20] Formatting --- src/luhn.py | 20 +++++++++++++++----- test/test_fast_pow.py | 6 ++---- 2 files changed, 17 insertions(+), 9 deletions(-) diff --git a/src/luhn.py b/src/luhn.py index e62e76b..f55cdc7 100644 --- a/src/luhn.py +++ b/src/luhn.py @@ -1,10 +1,14 @@ def luhn_check(card_number): if not all(x.isdigit() or x.isspace() for x in str(card_number)): - raise ValueError("card_number should only consist of numbers and whitespace characters") + raise ValueError( + "card_number should only consist of numbers and whitespace characters" + ) spaces = sum(1 for x in str(card_number) if x.isspace()) if spaces != 0 and spaces != 3: - raise ValueError("card_number should only have zero or three whitespace characters") + raise ValueError( + "card_number should only have zero or three whitespace characters" + ) if spaces != 0 and not all(len(x) == 4 for x in card_number.split()): raise ValueError("Each fragment of card_number should contain 4 digits") @@ -27,11 +31,17 @@ def luhn_check(card_number): if __name__ == "__main__": while True: number = input("Enter card number: ") - if number == "-1": break + if number == "-1": + break + try: result = luhn_check(number) - if result: print("correct") - else: print("incorrect") + + if result: + print("correct") + else: + print("incorrect") + break except ValueError as e: if 'card_number' in str(e): diff --git a/test/test_fast_pow.py b/test/test_fast_pow.py index 46502bc..de666c9 100644 --- a/test/test_fast_pow.py +++ b/test/test_fast_pow.py @@ -6,10 +6,6 @@ def test_two_power_two(): assert fast_pow(2, 2) == 4 -def test_zero(): - assert all(fast_pow(1, x) == 1 for x in range(1, 100)) - assert all(fast_pow(x, 0) == 1 for x in range(1, 100)) - def test_fuzzy(): for x in range(1, 10): for y in range(-10, 10): @@ -19,5 +15,7 @@ def test_negative(): assert fast_pow(-1, 4) == 1 def test_zero(): + assert all(fast_pow(1, x) == 1 for x in range(1, 100)) + assert all(fast_pow(x, 0) == 1 for x in range(1, 100)) with pytest.raises(ZeroDivisionError): fast_pow(0, -5) From 65c9cc6028115d6b8022b35f19ae4841753c486d Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 14:57:59 +0300 Subject: [PATCH 19/20] Change CI task names In order to launch them, since GitHub won't run CI on forks without changes. --- .github/workflows/ruff.yml | 2 +- .github/workflows/tests.yml | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/.github/workflows/ruff.yml b/.github/workflows/ruff.yml index 164630d..9663605 100644 --- a/.github/workflows/ruff.yml +++ b/.github/workflows/ruff.yml @@ -1,4 +1,4 @@ -name: Ruff +name: Ruff (linting) on: [push, pull_request] jobs: ruff: diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml index d09842c..cfea57f 100644 --- a/.github/workflows/tests.yml +++ b/.github/workflows/tests.yml @@ -1,4 +1,4 @@ -name: Pytest CI +name: Pytest CI (testing) on: [push, pull_request] From 322728de5272d09d4e76801c1409aac789cf8372 Mon Sep 17 00:00:00 2001 From: Georgiy Mikhailenko Date: Thu, 23 Oct 2025 14:59:07 +0300 Subject: [PATCH 20/20] Add whitespace to run CI --- .github/workflows/ruff.yml | 1 + 1 file changed, 1 insertion(+) diff --git a/.github/workflows/ruff.yml b/.github/workflows/ruff.yml index 9663605..4aeb829 100644 --- a/.github/workflows/ruff.yml +++ b/.github/workflows/ruff.yml @@ -1,5 +1,6 @@ name: Ruff (linting) on: [push, pull_request] + jobs: ruff: runs-on: ubuntu-latest