Python 中的 Pydotplus

Question

I am having a boring day thanks to be not solving a difficult problem, which is about pydotplus in python.

First of all here is my code:

from ipywidgets import Image
from io import StringIO
import pydotplus
from sklearn.tree import export_graphviz

d_tree99 = rf.estimators_[99]
dot_data = StringIO()
export_graphviz(d_tree99, feature_names = X.columns,
               out_file = dot_data, filled = True, rounded=True)
graph = pydotplus.graph_from_dot_data(dot_data.getvalue())
Image(value = graph.create_png())

I debugged the code in both in Jupyter Notebook, and in Visual Studio Code Python Extension.

And I got the below error in both of them:

InvocationException
Traceback (most recent call last) in () 9 out_file = dot_data, filled = True, rounded=True) 10 graph = pydotplus.graph_from_dot_data(dot_data.getvalue()) ---> 11 Image(value = graph.create_png())

C:\Program Files (x86)\Microsoft Visual Studio\Shared\Anaconda3_64\lib\site-packages\pydotplus\graphviz.py in (f, prog) 1789 self. setattr ( 1790 'create_' + frmt, -> 1791 lambda f=frmt, prog=self.prog: self.create(format=f, prog=prog) 1792 ) 1793 f = self. dict ['create_' + frmt]

C:\Program Files (x86)\Microsoft Visual Studio\Shared\Anaconda3_64\lib\site-packages\pydotplus\graphviz.py in create(self, prog, format) 2024 raise InvocationException( 2025 'Program terminated with status: %d. stderr follows: %s' % ( -> 2026 status, stderr_output)) 2027 elif stderr_output: 2028 print(stderr_output)

InvocationException: Program terminated with status: 1. stderr follows: 'C:\Program' is not recognized as an internal or external command, operable program or batch file.

Could you please inform me why i got this error. And could you please enlighten me about solving this error? This is very important for me.

Thanks a lot

Answer 1

If you have a path that contains spaces, you need to quote the path so it gets interpreted correctly by the command line interpreter. This did (for some reason) not happen in your program. I assume that the libraries you are using are not quoting the path correctly.

If that is the case, you have two options:

1. Fix the code in the library, so that it quotes the path correctly
2. Move your source code to a path that doesn't contain spaces

Related : Command Prompt Error 'C:\Program' is not recognized as an internal or external command, operable program or batch file