Python运行出现以下错误：
RuntimeWarning: line buffering (buffering=1) isn't supported in binary mode, the default buffer size will be used
self.stdout = io.open(c2pread, 'rb', bufsize)
代码是：
sklearn2pmml(pipeline, "D:\My Documents\17. Python\3 GBDT\GBDT.pmml")
求如何解决