Function _validate_timestamp_pyc

Lib/importlib/_bootstrap_external.py:446–471

Validate a pyc against the source last-modified time. *data* is the contents of the pyc file. (Only the first 16 bytes are required.) *source_mtime* is the last modified timestamp of the source file. *source_size* is None or the size of the source file in bytes. *name* is the

(data, source_mtime, source_size, name,
                            exc_details)

def _validate_timestamp_pyc(data, source_mtime, source_size, name,
                            exc_details):
    """Validate a pyc against the source last-modified time.

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

    *source_mtime* is the last modified timestamp of the source file.

    *source_size* is None or the size of the source file in bytes.

    *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 _unpack_uint32(data[8:12]) != (source_mtime & 0xFFFFFFFF):
        message = f'bytecode is stale for {name!r}'
        _bootstrap._verbose_message('{}', message)
        raise ImportError(message, **exc_details)
    if (source_size is not None and
        _unpack_uint32(data[12:16]) != (source_size & 0xFFFFFFFF)):
        raise ImportError(f'bytecode is stale for {name!r}', **exc_details)


def _validate_hash_pyc(data, source_hash, name, exc_details):