你好 王老师 安装了graphviz之后 报了CalledProcessError 但是测试结果可以跑出来
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
贷还是不贷：如何用Python和机器学习帮你决策？耳闻目睹了机器学习的诸般神奇，有没有冲动打算自己尝试一下？本文我们通过一个贷款风险评估的案例，用最通俗的语言向你介绍机器学习的基础招式，一步步帮助你用Python完成自己的第...
