Function _validate_hash_pyc

Lib/importlib/_bootstrap_external.py:474–495

Validate a hash-based pyc by checking the real source hash against the one in the pyc header. *data* is the contents of the pyc file. (Only the first 16 bytes are required.) *source_hash* is the importlib.util.source_hash() of the source file. *name* is the name of the module

(data, source_hash, name, exc_details)

def _validate_hash_pyc(data, source_hash, name, exc_details):
    """Validate a hash-based pyc by checking the real source hash against the one in
    the pyc header.

    *data* is the contents of the pyc file. (Only the first 16 bytes are
    required.)

    *source_hash* is the importlib.util.source_hash() of the source file.

    *name* is the name of the module being imported. It is used for logging.

    *exc_details* is a dictionary passed to ImportError if it raised for
    improved debugging.

    An ImportError is raised if the bytecode is stale.

    """
    if data[8:16] != source_hash:
        raise ImportError(
            f'hash in bytecode doesn\'t match hash of source {name!r}',
            **exc_details,
        )


def _compile_bytecode(data, name=None, bytecode_path=None, source_path=None):