Programming language: Python
License: MIT License
Tags: Refactoring    
Latest version: v0.9.0

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Safe code refactoring for modern Python projects.

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Bowler is a refactoring tool for manipulating Python at the syntax tree level. It enables safe, large scale code modifications while guaranteeing that the resulting code compiles and runs. It provides both a simple command line interface and a fluent API in Python for generating complex code modifications in code.

Bowler uses a "fluent" Query API to build refactoring scripts through a series of selectors, filters, and modifiers. Many simple modifications are already possible using the existing API, but you can also provide custom selectors, filters, and modifiers as needed to build more complex or custom refactorings. See the Query Reference for more details.

Using the query API to rename a single function, and generate an interactive diff from the results, would look something like this:

query = (
    Query(<paths to modify>)

For more details or documentation, check out https://pybowler.io

Installing Bowler

Bowler supports modifications to code from any version of Python 2 or 3, but it requires Python 3.6 or higher to run. Bowler can be easily installed using most common Python packaging tools. We recommend installing the latest stable release from PyPI with pip:

pip install bowler

You can also install a development version from source by checking out the Git repo:

git clone https://github.com/facebookincubator/bowler
cd bowler
python setup.py install


Bowler is MIT licensed, as found in the LICENSE file.

*Note that all licence references and agreements mentioned in the Bowler README section above are relevant to that project's source code only.