Function read_py_file

mypy/util.py:181–195

Try reading a Python file as list of source lines. Return None if something goes wrong.

(path: str, read: Callable[[str], bytes])

def read_py_file(path: str, read: Callable[[str], bytes]) -> list[str] | None:
    """Try reading a Python file as list of source lines.

    Return None if something goes wrong.
    """
    try:
        source = read(path)
    except OSError:
        return None
    else:
        try:
            source_lines = decode_python_encoding(source).splitlines()
        except DecodeError:
            return None
        return source_lines


def trim_source_line(line: str, max_len: int, col: int, min_width: int) -> tuple[str, int]: