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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def update_pypsa_timeseries(network, loads_to_update=None, generators_to_update=None, storages_to_update=None, timesteps=None):
 """ Updates load, generator, storage and bus time series in pypsa network. See functions :func:`update_pypsa_load_timeseries`, :func:`update_pypsa_generator_timeseries`, :func:`update_pypsa_storage_timeseries`, and :func:`update_pypsa_bus_timeseries` for more information. Parameters network : Network The eDisGo grid topology model overall container loads_to_update : :obj:`list`, optional List with all loads (of type :class:`~.grid.components.Load`) that need to be updated. If None all loads are updated depending on mode. See :meth:`~.tools.pypsa_io.to_pypsa` for more information. generators_to_update : :obj:`list`, optional List with all generators (of type :class:`~.grid.components.Generator`) that need to be updated. If None all generators are updated depending on mode. See :meth:`~.tools.pypsa_io.to_pypsa` for more information. storages_to_update : :obj:`list`, optional List with all storages (of type :class:`~.grid.components.Storage`) that need to be updated. If None all storages are updated depending on mode. See :meth:`~.tools.pypsa_io.to_pypsa` for more information. timesteps : :pandas:`pandas.DatetimeIndex<datetimeindex>` or :pandas:`pandas.Timestamp<timestamp>` Timesteps specifies which time steps of the load time series to export to pypsa representation and use in power flow analysis. If None all time steps currently existing in pypsa representation are updated. If not None current time steps are overwritten by given time steps. Default: None. """

    update_pypsa_load_timeseries(
        network, loads_to_update=loads_to_update, timesteps=timesteps)
    update_pypsa_generator_timeseries(
        network, generators_to_update=generators_to_update,
        timesteps=timesteps)
    update_pypsa_storage_timeseries(
        network, storages_to_update=storages_to_update, timesteps=timesteps)
    update_pypsa_bus_timeseries(network, timesteps=timesteps)
    # update pypsa snapshots
    if timesteps is None:
        timesteps = network.pypsa.buses_t.v_mag_pu_set.index
    network.pypsa.set_snapshots(timesteps)