def __init__(self):
    super(Diagram, self).__init__()
    self.int_attrs.append('edge_length')
    self.activation = True
    self.autonumber = False
    self.edge_length = None
    self.groups = []
    self.separators = []
    self.altblocks = []
def __init__(self):
    super(Diagram, self).__init__()
    self.int_attrs.append('edge_length')
    self.activation = True
    self.autonumber = False
    self.edge_length = None
    self.groups = []
    self.separators = []
    self.altblocks = []