Python3字典无has_key()方法
AttributeError Traceback (most recent call last) <ipython-input-5-6c2aec2b2583> in <module>() 36 i = u1; #int(u1)-1 37 j = u2; #int(u2)-1 ---> 38 if not userSimMatrix.has_key((i, j)): 39 usim = ssd.correlation(userMatrix.getrow(i).todense(), 40 userMatrix.getrow(j).todense()) D:\ProgramData\Anaconda3\lib\site-packages\scipy\sparse\base.py in __getattr__(self, attr) 684 return self.getnnz() 685 else: --> 686 raise AttributeError(attr + " not found") 687 688 def transpose(self, axes=None, copy=False): AttributeError: has_key not found
python3中需改为如下: