9 Best Python Code Refactoring Libraries

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by Dhiren Gala dot icon Updated: Feb 24, 2023

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Here are the best open-source Python code refactoring libraries for your applications. You can use these to improve the structure, readability, and performance of the code by automatically analyzing it and making suggested changes.


Refactoring is an important process in software development. There are various Python libraries that help improve the quality of code and make it more maintainable, scalable, and reusable. These libraries provide many features, including renaming, extracting code into functions, moving code between files, and more. With an easy-to-use interface, these integrate well with popular code editors like PyCharm, Emacs, and Vim. Also, certain libraries can detect issues such as unused variables, undefined names, and syntax errors. Most Python code refactoring libraries are highly configurable and can be customized to suit the needs of different projects.


In conclusion, Python code refactoring libraries help developers to identify and fix issues, enforce coding standards, and improve the code structure and readability. By using these tools, developers can save time, reduce errors, and create high-quality code that is easier to maintain and scale. We have handpicked the top and trending open-source Python code refactoring libraries for your next application development project:


Rope:

  • Used in Utilities, Python Refactoring, Parser applications, etc.
  • Provides various features like renaming, moving code between files, and more.
  • Supports popular code editors.

ropeby python-rope

Python doticonstar image 1629 doticonVersion:Currentdoticon
License: Weak Copyleft (LGPL-3.0)

a python refactoring library

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            ropeby python-rope

            Python doticon star image 1629 doticonVersion:Currentdoticon License: Weak Copyleft (LGPL-3.0)

            a python refactoring library
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                      PyLint:

                      • Used for checking errors and enforcing coding standards in Python code.
                      • Helps detect issues such as unused variables, undefined names, and syntax errors.
                      • Can be customized to match the requirements of different projects.

                      pylintby PyCQA

                      Python doticonstar image 4595 doticonVersion:v2.17.1doticon
                      License: Strong Copyleft (GPL-2.0)

                      It's not just a linter that annoys you!

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                                pylintby PyCQA

                                Python doticon star image 4595 doticonVersion:v2.17.1doticon License: Strong Copyleft (GPL-2.0)

                                It's not just a linter that annoys you!
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                                          Black:

                                          • Used for enforcing consistency and readability in codebases.
                                          • Automatically formats Python code to conform to a specific set of style guidelines.
                                          • It is highly configurable and customizable as per different projects.

                                          blackby psf

                                          Python doticonstar image 32603 doticonVersion:23.3.0doticon
                                          License: Permissive (MIT)

                                          The uncompromising Python code formatter

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                                                    blackby psf

                                                    Python doticon star image 32603 doticonVersion:23.3.0doticon License: Permissive (MIT)

                                                    The uncompromising Python code formatter
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                                                              Refactor:

                                                              • Used in Editor, Code Editor applications, etc.
                                                              • Provides code analysis and refactoring tools for Python.
                                                              • Features include renaming, extracting code into functions, and more.

                                                              refactorby isidentical

                                                              Python doticonstar image 379 doticonVersion:v0.6.3doticon
                                                              License: Permissive (MIT)

                                                              AST-based fragmental source code refactoring toolkit for Python

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                                                                        refactorby isidentical

                                                                        Python doticon star image 379 doticonVersion:v0.6.3doticon License: Permissive (MIT)

                                                                        AST-based fragmental source code refactoring toolkit for Python
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                                                                                  Autopep8

                                                                                  • Used for automatically formatting Python code to conform to PEP 8 style guidelines.
                                                                                  • Helps quickly and easily reformat code.
                                                                                  • Improves code readability and maintainability.

                                                                                  autopep8by hhatto

                                                                                  Python doticonstar image 4364 doticonVersion:v2.0.2doticon
                                                                                  License: Permissive (MIT)

                                                                                  A tool that automatically formats Python code to conform to the PEP 8 style guide.

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                                                                                            autopep8by hhatto

                                                                                            Python doticon star image 4364 doticonVersion:v2.0.2doticon License: Permissive (MIT)

                                                                                            A tool that automatically formats Python code to conform to the PEP 8 style guide.
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                                                                                                      Radon:

                                                                                                      • Used in Code Quality, Code Analyzer applications, etc.
                                                                                                      • Helps identify code that is difficult to maintain, understand, or extend.
                                                                                                      • Provides various metrics, including cyclomatic complexity and maintainability index.

                                                                                                      radonby rubik

                                                                                                      Python doticonstar image 1443 doticonVersion:Currentdoticon
                                                                                                      License: Permissive (MIT)

                                                                                                      Various code metrics for Python code

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                                                                                                                radonby rubik

                                                                                                                Python doticon star image 1443 doticonVersion:Currentdoticon License: Permissive (MIT)

                                                                                                                Various code metrics for Python code
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                                                                                                                          PyFlakes:

                                                                                                                          • Used for analyzing Python code for errors and potential problems.
                                                                                                                          • Helps identify issues such as undefined variables, unused imports, and more.
                                                                                                                          • Supports all active versions of Python: 3.6+.

                                                                                                                          pyflakesby PyCQA

                                                                                                                          Python doticonstar image 1253 doticonVersion:Currentdoticon
                                                                                                                          License: Permissive (MIT)

                                                                                                                          A simple program which checks Python source files for errors

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                                                                                                                                    pyflakesby PyCQA

                                                                                                                                    Python doticon star image 1253 doticonVersion:Currentdoticon License: Permissive (MIT)

                                                                                                                                    A simple program which checks Python source files for errors
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                                                                                                                                              SymPy:

                                                                                                                                              • Used to perform algebraic manipulations, calculus operations, and more.
                                                                                                                                              • It’s a library for symbolic mathematics in Python.
                                                                                                                                              • Helps simplify and refactor complex mathematical expressions in code.

                                                                                                                                              sympyby sympy

                                                                                                                                              Python doticonstar image 10857 doticonVersion:sympy-1.12doticon
                                                                                                                                              License: Others (Non-SPDX)

                                                                                                                                              A computer algebra system written in pure Python

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                                                                                                                                                        sympyby sympy

                                                                                                                                                        Python doticon star image 10857 doticonVersion:sympy-1.12doticon License: Others (Non-SPDX)

                                                                                                                                                        A computer algebra system written in pure Python
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                                                                                                                                                                  Pyroma:

                                                                                                                                                                  • Used to ensure that Python packages are well-designed and easy to use.
                                                                                                                                                                  • It is a tool for analyzing Python packages for quality and best practices.
                                                                                                                                                                  • Helps identify issues such as missing metadata, poor project structure, and more.

                                                                                                                                                                  pyromaby regebro

                                                                                                                                                                  Python doticonstar image 174 doticonVersion:Currentdoticon
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                                                                                                                                                                  Rate your Python packages package friendliness

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                                                                                                                                                                            pyromaby regebro

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                                                                                                                                                                            Rate your Python packages package friendliness
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