python提示错误TypeError: write() argument must be str, not bytes
还是在学习《Machine Learning in Action》中决策树一章中，在学习决策树存储过程中先是提示错误TypeError: write() argument must be str, not bytes，看错误信息是说write()函数的参数必须为str,而不是字节bytes。不明白，看源码哪里提示错误了，pickle.dump(inputTree,fw)这一条语句编译时出错了，那么
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