**数组创建 **arange, array, copy, empty, empty_like, eye, fromfile, fromfunction, identity, linspace, logspace, mgrid, ogrid, ones, ones_like, r, zeros, zeros_like **数组转换 **ndarray.astype, atleast_1d, atleast_2d, atleast_3d, mat **操作 **array_split, column_stack, concatenate, diagonal, dsplit, dstack, hsplit, hstack, ndarray.item, newaxis, ravel, repeat, reshape, resize, squeeze, swapaxes, take, transpose, vsplit, vstack **问题 **all, any, nonzero, where **排列 **argmax, argmin, argsort, max, min, ptp, searchsorted, sort 运算 choose, compress, cumprod, cumsum, inner, ndarray.fill, imag, prod, put, putmask, real, sum **基础统计 **cov, mean, std, var **基本线性代……
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