astvalidate

A series of AST validators for validating the integrity of the given abstract syntax tree.

API

validate(tree: ast.Module, level: Optional[Literal[1, 2, 3]] = None) -> bool

tree is the AST object that you want to verify. level is an argument to pass the level of strictness, and turn on/off some of the validators. For a detailed list of validators, see the table below:

If there are any errors, validate() will raise a SyntaxError or issue SyntaxWarnings on the location of the target node.

import ast
import astvalidate

tree = ast.parse("""
def func():
    raise ValueError from something
""")
tree.body[0].body[0].exc = None
assert astvalidate.validate(tree)

File "<string>", line 3
SyntaxError: Raise's cause can't be used without setting an exception