Build a DNN using the Keras Functional API Rezensionen

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Plotting of the model didn't work (as it didn't in the previous lab)

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--------------------------------------------------------------------------- FileNotFoundError Traceback (most recent call last) File /opt/conda/lib/python3.9/site-packages/pydot.py:1856, in Dot.create(self, prog, format, encoding) 1855 try: -> 1856 p = subprocess.Popen( 1857 cmdline, 1858 env=env, 1859 cwd=tmp_dir, 1860 shell=False, 1861 stderr=subprocess.PIPE, stdout=subprocess.PIPE) 1862 except OSError as e: File /opt/conda/lib/python3.9/subprocess.py:951, in Popen.__init__(self, args, bufsize, executable, stdin, stdout, stderr, preexec_fn, close_fds, shell, cwd, env, universal_newlines, startupinfo, creationflags, restore_signals, start_new_session, pass_fds, user, group, extra_groups, encoding, errors, text, umask) 948 self.stderr = io.TextIOWrapper(self.stderr, 949 encoding=encoding, errors=errors) --> 951 self._execute_child(args, executable, preexec_fn, close_fds, 952 pass_fds, cwd, env, 953 startupinfo, creationflags, shell, 954 p2cread, p2cwrite, 955 c2pread, c2pwrite, 956 errread, errwrite, 957 restore_signals, 958 gid, gids, uid, umask, 959 start_new_session) 960 except: 961 # Cleanup if the child failed starting. File /opt/conda/lib/python3.9/subprocess.py:1837, in Popen._execute_child(self, args, executable, preexec_fn, close_fds, pass_fds, cwd, env, startupinfo, creationflags, shell, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite, restore_signals, gid, gids, uid, umask, start_new_session) 1836 err_msg = os.strerror(errno_num) -> 1837 raise child_exception_type(errno_num, err_msg, err_filename) 1838 raise child_exception_type(err_msg) FileNotFoundError: [Errno 2] No such file or directory: 'dot' During handling of the above exception, another exception occurred: AttributeError Traceback (most recent call last) Cell In[12], line 1 ----> 1 tf.keras.utils.plot_model(model, 'dnn_model.png', show_shapes=False, rankdir='LR') File /opt/conda/lib/python3.9/site-packages/keras/utils/vis_utils.py:384, in plot_model(model, to_file, show_shapes, show_dtype, show_layer_names, rankdir, expand_nested, dpi, layer_range) 330 @keras_export('keras.utils.plot_model') 331 def plot_model(model, 332 to_file='model.png', (...) 338 dpi=96, 339 layer_range=None): 340 """Converts a Keras model to dot format and save to a file. 341 342 Example: (...) 382 This enables in-line display of the model plots in notebooks. 383 """ --> 384 dot = model_to_dot( 385 model, 386 show_shapes=show_shapes, 387 show_dtype=show_dtype, 388 show_layer_names=show_layer_names, 389 rankdir=rankdir, 390 expand_nested=expand_nested, 391 dpi=dpi, 392 layer_range=layer_range) 393 to_file = path_to_string(to_file) 394 if dot is None: File /opt/conda/lib/python3.9/site-packages/keras/utils/vis_utils.py:138, in model_to_dot(model, show_shapes, show_dtype, show_layer_names, rankdir, expand_nested, dpi, subgraph, layer_range) 135 from keras.engine import sequential 136 from keras.engine import functional --> 138 if not check_pydot(): 139 message = ( 140 'You must install pydot (`pip install pydot`) ' 141 'and install graphviz ' 142 '(see instructions at https://graphviz.gitlab.io/download/) ', 143 'for plot_model/model_to_dot to work.') 144 if 'IPython.core.magics.namespace' in sys.modules: 145 # We don't raise an exception here in order to avoid crashing notebook 146 # tests where graphviz is not available. File /opt/conda/lib/python3.9/site-packages/keras/utils/vis_utils.py:50, in check_pydot() 46 return False 47 try: 48 # Attempt to create an image of a blank graph 49 # to check the pydot/graphviz installation. ---> 50 pydot.Dot.create(pydot.Dot()) 51 return True 52 except (OSError, pydot.InvocationException): File /opt/conda/lib/python3.9/site-packages/pydot.py:1863, in Dot.create(self, prog, format, encoding) 1856 p = subprocess.Popen( 1857 cmdline, 1858 env=env, 1859 cwd=tmp_dir, 1860 shell=False, 1861 stderr=subprocess.PIPE, stdout=subprocess.PIPE) 1862 except OSError as e: -> 1863 if e.errno == os.errno.ENOENT: 1864 args = list(e.args) 1865 args[1] = '"{prog}" not found in path.'.format( 1866 prog=prog) AttributeError: module 'os' has no attribute 'errno'

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