error with plot_animal_tree #18
Description
import mglearn
mglearn.plots.plot_animal_tree()error log
/opt/anaconda3/lib/python3.7/site-packages/sklearn/externals/six.py:31: DeprecationWarning: The module is deprecated in version 0.21 and will be removed in version 0.23 since we've dropped support for Python 2.7. Please rely on the official version of six (https://pypi.org/project/six/).
"(https://pypi.org/project/six/).", DeprecationWarning)
/opt/anaconda3/lib/python3.7/site-packages/sklearn/externals/joblib/__init__.py:15: DeprecationWarning: sklearn.externals.joblib is deprecated in 0.21 and will be removed in 0.23. Please import this functionality directly from joblib, which can be installed with: pip install joblib. If this warning is raised when loading pickled models, you may need to re-serialize those models with scikit-learn 0.21+.
warnings.warn(msg, category=DeprecationWarning)
---------------------------------------------------------------------------
FileNotFoundError Traceback (most recent call last)
/opt/anaconda3/lib/python3.7/site-packages/graphviz/backend.py in run(cmd, input, capture_output, check, quiet, **kwargs)
158 try:
--> 159 proc = subprocess.Popen(cmd, startupinfo=get_startupinfo(), **kwargs)
160 except OSError as e:
/opt/anaconda3/lib/python3.7/subprocess.py in __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, encoding, errors, text)
774 errread, errwrite,
--> 775 restore_signals, start_new_session)
776 except:
/opt/anaconda3/lib/python3.7/subprocess.py in _execute_child(self, args, executable, preexec_fn, close_fds, pass_fds, cwd, env, startupinfo, creationflags, shell, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite, restore_signals, start_new_session)
1521 err_msg += ': ' + repr(err_filename)
-> 1522 raise child_exception_type(errno_num, err_msg, err_filename)
1523 raise child_exception_type(err_msg)
FileNotFoundError: [Errno 2] No such file or directory: 'dot': 'dot'
During handling of the above exception, another exception occurred:
ExecutableNotFound Traceback (most recent call last)
<ipython-input-2-53d3a20defda> in <module>
1 import mglearn
----> 2 mglearn.plots.plot_animal_tree()
/opt/anaconda3/lib/python3.7/site-packages/mglearn/plot_animal_tree.py in plot_animal_tree(ax)
23 mygraph.edge("2", "5", label="True")
24 mygraph.edge("2", "6", label="False")
---> 25 mygraph.render("tmp")
26 ax.imshow(imread("tmp.png"))
27 ax.set_axis_off()
/opt/anaconda3/lib/python3.7/site-packages/graphviz/files.py in render(self, filename, directory, view, cleanup, format, renderer, formatter, quiet, quiet_view)
207 rendered = backend.render(self._engine, format, filepath,
208 renderer=renderer, formatter=formatter,
--> 209 quiet=quiet)
210
211 if cleanup:
/opt/anaconda3/lib/python3.7/site-packages/graphviz/backend.py in render(engine, format, filepath, renderer, formatter, quiet)
204 else:
205 cwd = None
--> 206 run(cmd, capture_output=True, cwd=cwd, check=True, quiet=quiet)
207 return rendered
208
/opt/anaconda3/lib/python3.7/site-packages/graphviz/backend.py in run(cmd, input, capture_output, check, quiet, **kwargs)
160 except OSError as e:
161 if e.errno == errno.ENOENT:
--> 162 raise ExecutableNotFound(cmd)
163 else:
164 raise
ExecutableNotFound: failed to execute ['dot', '-Tpng', '-O', 'tmp'], make sure the Graphviz executables are on your systems' PATH