def collect(package='perch.migrations'):
    """
    Import all modules inside the perch.migrations package and return the
    registered migrations
    """
    package = importlib.import_module(package)

    for loader, name, is_pkg in pkgutil.walk_packages(package.__path__):
        importlib.import_module(package.__name__ + '.' + name)

    return _migrations
Import all modules inside the perch.migrations package and return the
    registered migrations