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PyPI · #515 most downloaded on PyPI
A concrete syntax tree with AST-like properties for Python 3.0 through 3.15 programs.
Last release 2 months ago
29 Jul 2026
Release timing varies
gaps range from 2 weeks to 9 months
Nearly every release is documented
notes for 60 of the last 60 stable releases
1 version withdrawn
withdrawn after publishing
7 years old
66 releases · first in 2019
Scope.assignments and Scope.accesses APIs to access all references in a scope.
Scope.assignments and Scope.accesses APIs to access all references in a scope.<comprehension> in Scope.get_qualified_names_for and QualifiedName.BatchableMetadataProvider typing covariant over its typevar.Added matchers which allow comparing LibCST trees against arbitrary patterns.
deep_remove and deep_replace helper methods on CSTNode.deep_clone to correctly clone leaf nodes.One column per quarter.
Added preliminary support for parsing Python 3.5 and Python 3.6 source.
Added base visit/leave methods which can be subclassed.
Metadata interface is now exported.
First public release of LibCST.
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