ASTx

ASTx is a language-agnostic Python model for abstract syntax trees. It provides typed nodes and common metadata that parsers, analyzers, transpilers, and compiler backends can share without adopting a particular source grammar.

Status: functional and actively evolving. ASTx models more constructs than any one backend necessarily supports.

Scope

ASTx currently models:

source locations, identifiers, expressions, statements, and blocks
scalar, string, temporal, collection, generic, and union types
functions, defaults, modules, packages, and imports
conditionals, loops, generators, comprehensions, and context managers
classes, structs, inheritance, member access, and modifiers
templates, FFI pointers/opaque handles, and semantic helper metadata
lists, buffer views, tensors, DataFrames, and Series
YAML, JSON, Mermaid, PNG, and optional console visualization paths

ASTx does not lex or parse source and does not generate LLVM by itself. IRx is the Arx ecosystem backend that analyzes and lowers the supported ASTx subset.

Install

pip install astx

For ASCII visualization through mermaid-ascii:

pip install 'astx[console]'

Example

import astx

args = astx.Arguments(
    astx.Argument(name="x", type_=astx.Int32()),
    astx.Argument(name="y", type_=astx.Int32()),
)

body = astx.Block()
body.append(
    astx.FunctionReturn(
        astx.BinaryOp(
            op_code="+",
            lhs=astx.Variable("x"),
            rhs=astx.Variable("y"),
        )
    )
)

add = astx.FunctionDef(
    prototype=astx.FunctionPrototype(
        name="add",
        args=args,
        return_type=astx.Int32(),
    ),
    body=body,
)

print(add.to_yaml())

Relationship to Arrow

ASTx defines the compiler-facing node and type vocabulary for arrays, buffer views, Tensors, DataFrames, and Series. It deliberately does not depend on Apache Arrow or own native storage. IRx maps those nodes to its Arrow C++ runtime.

Documentation: https://arxlang.org/astx/

License: Apache-2.0.

Metadata

Release files for astx 1.24.1

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for astx 1.24.1
File	Size	Uploaded
astx-1.24.1.tar.gz	47.9 kB	Aug 5, 2026	Details

Built distribution (wheel)

Table of built distributions (wheels) for astx 1.24.1
File	Interpreter	ABI	Platform	Reset
astx-1.24.1-py3-none-any.whl 72.3 kB Aug 5, 2026	Python 3	none	any	Details

Total release size: 120.2 kB

Release files / astx-1.24.1.tar.gz

Download URL	astx-1.24.1.tar.gz
Size	47.9 kB
Tags	Source
SHA-256 checksum How to use checksums	`d81ee0aaca6c61438963ce00d5f86872a207cddf19ad50ce0d1d4c3667f005ee`
BLAKE2b-256 checksum How to use checksums	`e116f573fa60d2d0b95614a27a623ad663929994ab3f089b1d1cbfd9facd0fce`
Upload date	Aug 5, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`poetry/2.4.1 CPython/3.10.20 Linux/6.17.0-1020-azure`

Release files / astx-1.24.1-py3-none-any.whl

Download URL	astx-1.24.1-py3-none-any.whl
Size	72.3 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`f48f68159ec0bafe5863295a6936466aa23f1ee150f7297b273a0563075f9dfd`
BLAKE2b-256 checksum How to use checksums	`4b45b897be1a1a18f160be5470091713f00710a472d7d5e89d03ac62de1ed9cc`
Upload date	Aug 5, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`poetry/2.4.1 CPython/3.10.20 Linux/6.17.0-1020-azure`