code: def create_powerflow_problem(timerange, components):
      
  
      # initialize powerflow problem
      network, snapshots = init_pypsa_network(timerange)
  
      # add components to network
      for component in components.keys():
          network.import_components_from_dataframe(components[component],
                                                   component)
  
      return network, snapshots
docs: Create PyPSA network object and fill with data
      Parameters
      ----------
      timerange: Pandas DatetimeIndex
          Time range to be analyzed by PF
      components: dict
      Returns
      -------
      network: PyPSA powerflow problem object