Python简单获取二维数组行列数的方法示例

import numpy as npx = np.array([[1,2,5],[2,3,5],[3,4,5],[2,3,6]])# 输出数组的行和列数print x.shape # (4, 3)# 只输出行数print x.shape[0] # 4# 只输出列数print x.shape[1] # 3

>>> arr = [[1,4,7,10,15], [2,5,8,12,19], [3,6,9,16,22], [10,13,14,17,24]]>>> len(arr) #行数4>>> len(arr[0]) #列数5