【发布时间】：2020-03-03 06:06:06
【问题描述】：
我在一小时内找不到任何解决此问题的方法，因此决定最好在这里提问。唯一丰富的信息是here，没有详细说明来匹配我的情况。
我在 Windows 10 上，使用 PyCharm 连接离线 Ubuntu 16.04 服务器尝试一些机器学习分类。
代码在某个时候工作，然后抛出这个
Traceback (most recent call last):
File "/home/user/.local/lib/python3.5/site-packages/graphviz/backend.py", line 159, in run
proc = subprocess.Popen(cmd, startupinfo=get_startupinfo(), **kwargs)
File "/usr/lib/python3.5/subprocess.py", line 947, in __init__
restore_signals, start_new_session)
File "/usr/lib/python3.5/subprocess.py", line 1551, in _execute_child
raise child_exception_type(errno_num, err_msg)
FileNotFoundError: [Errno 2] No such file or directory: 'dot'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/user/project/2_input/xgboost_loop.py", line 55, in <module>
xgb.plot_tree(classifier, ax=plt.gca())
File "/home/user/.local/lib/python3.5/site-packages/xgboost/plotting.py", line 281, in plot_tree
s.write(g.pipe(format='png'))
File "/home/user/.local/lib/python3.5/site-packages/graphviz/files.py", line 138, in pipe
quiet=quiet)
File "/home/user/.local/lib/python3.5/site-packages/graphviz/backend.py", line 229, in pipe
out, _ = run(cmd, input=data, capture_output=True, check=True, quiet=quiet)
File "/home/user/.local/lib/python3.5/site-packages/graphviz/backend.py", line 162, in run
raise ExecutableNotFound(cmd)
graphviz.backend.ExecutableNotFound: failed to execute ['dot', '-Tpng'], make sure the Graphviz executables are on your systems' PATH
Process finished with exit code 1
我通过 pip list 检查了我在 Ubuntu 服务器上确实有 graphviz 版本 0.13.2。上面给出的链接中建议将whereis dot 的输出作为os.environ["PATH"] += os.pathsep + 'OUTPUT' 添加到要运行的文件中，但除了dot: 之外没有任何输出。
在本地，我还检查了我是否有相同的graphviz 版本0.13.2。
【问题讨论】：
标签： pycharm ubuntu-16.04 graphviz dot