Library to refactor python code through AST manipulation.
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This is still a work-in-progress; there is much more to do. Existing functionality may not be perfect.
Enable python source code refactoring through AST modifications.
Sample use cases:
pasta.dump(pasta.parse(src)) == src.
2.7and up to
import pasta tree = pasta.parse(source_code)
... Augment contents of tree ...
source_code = pasta.dump(tree)
Pasta includes some common augmentations out-of-the-box. These can be used as building blocks for more complex refactoring actions.
There will be more of these basic augmentations added over time. Stay tuned!
# Rewrite references from one module to another rename.rename_external(tree, 'pkg.subpkg.module', 'pkg.other_module')
Rewrite references from one package to another
rename.rename_external(tree, 'pkg.subpkg', 'pkg.other_pkg')
Rewrite references to an imported name in another module
rename.rename_external(tree, 'pkg.module.Query', 'pkg.module.ExecuteQuery')
Changing the indentation level of a block of code is not supported. This is not an issue for renames, but would cause problems for refactors like extracting a method.
pastaworks under the assumption that the python version that the code is written for and the version used to run pasta are the same. This is because pasta relies on
Some python features are not fully supported, including
# Run all tests python setup.py test
Run a single test suite
python setup.py test -s pasta.base.annotate_test.suite
This is not an official Google product.