你好 王老師 安裝了graphviz之后 報(bào)了CalledProcessError 但是測(cè)試結(jié)果可以跑出來
CalledProcessError Traceback (most recent call last)
<ipython-input-25-da79615505d3> in <module>()
10
11 from subprocess import check_call
---> 12 check_call(['dot','-Tpng','safe-loans.dot','-o','safe-loans.png'])
13
14 from IPython.display import Image as PImage
/Users/henrywang/anaconda/lib/python2.7/subprocess.pyc in check_call(*popenargs, **kwargs)
184 if cmd is None:
185 cmd = popenargs[0]
--> 186 raise CalledProcessError(retcode, cmd)
187 return 0
188
CalledProcessError: Command '['dot', '-Tpng', 'safe-loans.dot', '-o', 'safe-loans.png']' returned non-zero exit status -6
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