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# How to contribute
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## Resources in the documentation
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* [Development quickstart](http://asciimoo.github.io/searx/dev/contribution_guide.html)
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* [Contribution guide](http://asciimoo.github.io/searx/dev/contribution_guide.html)
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## Submitting PRs
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Please follow the provided PR template when writing a description for your changes.
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Do not take criticism personally. When you get feedback, it is about your work,
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not your character, personality, etc. Keep in mind we all want to make the project better.
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When something is not clear, please ask questions to clear things up.
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If you would like to introduce a big architectural changes or do a refactoring
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either in the codebase or the development tools, please open an issue with a proposal
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first. This way we can think together about the problem and probably come up
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with a better solution.
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## Coding conventions and guidelines
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### Commit messages
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* Always write descriptive commit messages ("fix bug" is not acceptable).
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* Use the present tense ("Add feature" not "Added feature").
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* Use the imperative mood ("Move cursor to..." not "Moves cursor to...").
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* Limit the first line to 72 characters or less.
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* Include the number of the issue you are fixing.
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### Coding guidelines
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As a Python project, we must follow [PEP 8](https://www.python.org/dev/peps/pep-0008/) and [PEP 20](https://www.python.org/dev/peps/pep-0020/) guidelines.
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Furthermore, follow the Clean code conventions. The most important
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in this project are the following rules:
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* Simpler is better. [KISS principle](https://en.wikipedia.org/wiki/KISS_principle)
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* Be consistent.
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* Every function must do one thing.
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* Use descriptive names for functions and variables.
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* Always look for the root cause.
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* Keep configurable data high level.
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* Avoid negative conditionals.
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* Prefer fewer arguments.
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* Do not add obvious comment to code.
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* Do not comment out code, just delete lines.
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