def labels(self):
        '''Return the names of our marker labels in canonical order.'''
        return sorted(self.channels, key=lambda c: self.channels[c])
def labels(self):
        '''Return the names of our marker labels in canonical order.'''
        return sorted(self.channels, key=lambda c: self.channels[c])
def labels ( self ) : return sorted ( self . channels , key = lambda c : self . channels [ c ] )
Return the names of our marker labels in canonical order.
Return the names of our marker labels in canonical order .