collections.py 文件源码

def tonumpyarray(self, fill=None, symmetric=False):
        import numpy as np
        if fill is None: fill = np.NAN
        res = np.empty((self.__dim, self.__dim))
        idx = 0
        for i in range(self.__dim):
            for j in range(i):
                res[i,j] = self._data[idx]
                if symmetric: res[j,i] = res[i,j]
                idx += 1
            res[i,i] = fill
            if not symmetric: res[i,i+1:self.__dim] = fill
        return res