print eval(str)

        self.frame.focus()

class Leveldisplay:

    def __init__(self, parent, channel_levels, num_channels=68):

        frames = (make_frame(parent), make_frame(parent))

        channel_levels[:]=[]

        self.number_labels = {}

        for channel in range(1, num_channels+1):

            # frame for this channel

            f = Frame(frames[channel > (num_channels/2)])

            # channel number -- will turn yellow when being altered

            num_lab = Label(f, text=str(channel), width=3, bg='lightPink', 

                font=stdfont, padx=0, pady=0, bd=0, height=1)

            num_lab.pack(side='left')

            self.number_labels[channel] = num_lab

            # text description of channel

            Label(f, text=Patch.get_channel_name(channel), width=8, 

                font=stdfont, anchor='w', padx=0, pady=0, bd=0, 

                height=1).pack(side='left')

            # current level of channel, shows intensity with color

            l = Label(f, width=3, bg='lightBlue', font=stdfont, anchor='e', 

                      padx=1, pady=0, bd=0, height=1)

            l.pack(side='left')

            colorlabel(l)

            channel_levels.append(l)

            f.pack(side='top')

        self.channel_levels = channel_levels

        # channel_levels is an output - changelevel will use it to access 

        # these labels

class Subpanels:

    def __init__(self, scenesparent, effectsparent, scalelevels, Subs, xfader,

        changelevel):

        sublist = Subs.subs.items()

        sublist.sort()

        for name, sub in sublist:

            # choose one of the sub panels to add to

            if sub.is_effect:

                parent=effectsparent

                side1='bottom'

                orient='vert'

            else:

                parent=scenesparent

                side1='right'

                orient='horiz'

            # make frame that surrounds the whole submaster

            f=Frame(parent, bd=1, relief='raised')

            f.pack(fill='both',exp=1,side=('top','left')[sub.is_effect])

            # make DoubleVar (there might be one left around from before a refresh)

            if name not in scalelevels:

                scalelevels[name]=DoubleVar()

            sub.set_slider_var(scalelevels[name])

            scaleopts = {}

            if sub.color:

                scaleopts['troughcolor'] = sub.color

            s = FlyingFader(f, label=str(name), variable=scalelevels[name],

                            showvalue=0, length=300-17,

                            width=18, sliderlength=18,

                            orient=orient,

                            labelwidth=12, # this should be equal to the longest label name

                            **scaleopts)

            for axis in ('y','x'):

                cvar=IntVar()

                cb=Togglebutton(f,text=axis.upper(),variable=cvar,font=stdfont, padx=0, 

                               pady=0, bd=1)

                cb.pack(side=side1,fill='both', padx=0, pady=0)

                s.bind('<Key-%s>'%axis, lambda ev,cb=cb: cb.invoke)

                xfader.registerbutton(name,axis,cvar)

            s.pack(side='left', fill=BOTH)

            # effects frame?

            sframe = Frame(f,bd=2,relief='groove')

            sub.draw_tk(sframe)

            sframe.pack(side='left',fill='y')