zlib-1.2.4.tar.gz Version 1.2.4 has many changes over 1.2.3, including these improvements: Fixed bugs in adler32_combine(), compressBound(), and deflateBound() Wholesale replacement of gz* functions with faster versions As part of that, added gzbuff
【课程9.2】 Numpy基础数据结构
NumPy数组是一个多维数组对象，称为ndarray。其由两部分组成：
① 实际的数据
② 描述这些数据的元数据
1.多维数组ndarray
import numpy as np
ar = np.array([1,2,3,4,5,6,7])
print(ar) # 输出数组，注意数组的格式：中括号，元素之间没有逗号（和列表区分）
print(ar.ndim) # 输出数组维度的个数（轴数），或者说“秩”，维度的数量也称rank
p
