code: def draw_2d(self,  Hs=False): # pragma: no cover
          r'''Interface for drawing a 2D image of all the molecules in the
          mixture. Requires an HTML5 browser, and the libraries RDKit and
          IPython. An exception is raised if either of these libraries is
          absent.
  
          Parameters
          ----------
          Hs : bool
              Whether or not to show hydrogen
  
          Examples
          --------
          Mixture(['natural gas']).draw_2d()
          '''
          try:
              from rdkit.Chem import Draw
              from rdkit.Chem.Draw import IPythonConsole
              if Hs:
                  mols = [i.rdkitmol_Hs for i in self.Chemicals]
              else:
                  mols = [i.rdkitmol for i in self.Chemicals]
              return Draw.MolsToImage(mols)
          except:
              return 'Rdkit is required for this feature.f draw_2d(self,  Hs=False): # pragma: no cover
          r'''Interface for drawing a 2D image of all the molecules in the
          mixture. Requires an HTML5 browser, and the libraries RDKit and
          IPython. An exception is raised if either of these libraries is
          absent.
  
          Parameters
          ----------
          Hs : bool
              Whether or not to show hydrogen
  
          Examples
          --------
          Mixture(['natural gas']).draw_2d()
          '''
          try:
              from rdkit.Chem import Draw
              from rdkit.Chem.Draw import IPythonConsole
              if Hs:
                  mols = [i.rdkitmol_Hs for i in self.Chemicals]
              else:
                  mols = [i.rdkitmol for i in self.Chemicals]
              return Draw.MolsToImage(mols)
          except:
              return 'Rdkit is required for this feature.'
docs: r'''Interface for drawing a 2D image of all the molecules in the
          mixture. Requires an HTML5 browser, and the libraries RDKit and
          IPython. An exception is raised if either of these libraries is
          absent.
  
          Parameters
          ----------
          Hs : bool
              Whether or not to show hydrogen
  
          Examples
          --------
          Mixture(['natural gas']).draw_2d()