Source code for langchain_community.document_loaders.parsers.language.python

import ast
from typing import Any, List, Tuple

from langchain_community.document_loaders.parsers.language.code_segmenter import (
    CodeSegmenter,
)


[docs]class PythonSegmenter(CodeSegmenter): """Code segmenter for `Python`."""
[docs] def __init__(self, code: str): super().__init__(code) self.source_lines = self.code.splitlines()
[docs] def is_valid(self) -> bool: try: ast.parse(self.code) return True except SyntaxError: return False
def _extract_code(self, node: Any) -> str: start = node.lineno - 1 end = node.end_lineno return "\n".join(self.source_lines[start:end])
[docs] def extract_functions_classes(self) -> List[str]: tree = ast.parse(self.code) functions_classes = [] for node in ast.iter_child_nodes(tree): if isinstance(node, (ast.FunctionDef, ast.AsyncFunctionDef, ast.ClassDef)): functions_classes.append(self._extract_code(node)) return functions_classes
[docs] def simplify_code(self) -> str: tree = ast.parse(self.code) simplified_lines = self.source_lines[:] indices_to_del: List[Tuple[int, int]] = [] for node in ast.iter_child_nodes(tree): if isinstance(node, (ast.FunctionDef, ast.AsyncFunctionDef, ast.ClassDef)): start, end = node.lineno - 1, node.end_lineno simplified_lines[start] = f"# Code for: {simplified_lines[start]}" assert isinstance(end, int) indices_to_del.append((start + 1, end)) for start, end in reversed(indices_to_del): del simplified_lines[start + 0 : end] return "\n".join(simplified_lines)