def model_to_dot(model, show_shapes=False, show_layer_names=True):
dot = pydot.Dot()
dot.set('rankdir', 'TB')
dot.set('concentrate', True)
dot.set_node_defaults(shape='record')
if isinstance(model, Sequential):
if not model.built:
model.build()
model = model.model
layers = model.layers
# Create graph nodes.
for layer in layers:
layer_id = str(id(layer))
# Append a wrapped layer's label to node's label, if it exists.
layer_name = layer.name
class_name = layer.__class__.__name__
if isinstance(layer, Wrapper):
layer_name = '{}({})'.format(layer_name, layer.layer.name)
child_class_name = layer.layer.__class__.__name__
class_name = '{}({})'.format(class_name, child_class_name)
# Create node's label.
if show_layer_names:
label = '{}: {}'.format(layer_name, class_name)
else:
label = class_name
# Rebuild the label as a table including input/output shapes.
if show_shapes:
try:
outputlabels = str(layer.output_shape)
except:
outputlabels = 'multiple'
if hasattr(layer, 'input_shape'):
inputlabels = str(layer.input_shape)
elif hasattr(layer, 'input_shapes'):
inputlabels = ', '.join(
[str(ishape) for ishape in layer.input_shapes])
else:
inputlabels = 'multiple'
label = '%s\n|{input:|output:}|{{%s}|{%s}}' % (label, inputlabels, outputlabels)
node = pydot.Node(layer_id, label=label)
dot.add_node(node)
# Connect nodes with edges.
for layer in layers:
layer_id = str(id(layer))
for i, node in enumerate(layer.inbound_nodes):
node_key = layer.name + '_ib-' + str(i)
if node_key in model.container_nodes:
for inbound_layer in node.inbound_layers:
inbound_layer_id = str(id(inbound_layer))
layer_id = str(id(layer))
dot.add_edge(pydot.Edge(inbound_layer_id, layer_id))
return dot
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