Class AromaticChangeScreen

BaseScreen.BaseScreen --+
                        |
                       AromaticChangeScreen

>>> screen = AromaticChangeScreen(True);
>>> screen.screenSmiles("C=CC=C.C=C>>C1CC=CCC1");
False
>>> screen.screenSmiles("N=[N+]=[N-].C#C>>c1cnn[nH]1");
True
>>> screen.screenSmiles("C.C=C>>C1CC1");
False
>>> screen.screenSmiles("CC.C=C>>C1CCC1");
False
>>> screen.screenSmiles("C1CC=CCC1>>C=CC=C.C=C");
False
>>> screen.screenSmiles("c1cnn[nH]1>>N=[N+]=[N-].C#C");
False

>>> screen = AromaticChangeScreen(False);
>>> screen.screenSmiles("C=CC=C.C=C>>C1CC=CCC1");
False
>>> screen.screenSmiles("N=[N+]=[N-].C#C>>c1cnn[nH]1");
False
>>> screen.screenSmiles("C.C=C>>C1CC1");
False
>>> screen.screenSmiles("CC.C=C>>C1CCC1");
False
>>> screen.screenSmiles("C1CC=CCC1>>C=CC=C.C=C");
False
>>> screen.screenSmiles("c1cnn[nH]1>>N=[N+]=[N-].C#C");
True

Constructor.  
formation
    Indicates if the screen is to allow reactions where
    there is "formation" of aromatic systems.
    That is, where there are more such systems in the products
    than reactants.  If false, will instead look for
    "destruction" where there are fewer such systems in the
    products than reactants.