python 处理二维数组

转自：https://www.cnblogs.com/laoyueblogs/p/9250607.html

__author__ = 'LaoYue'
# -*- coding: utf-8 -*-

array = ['aa', 'bb', 'cc','dd']
matrix = [array] * 3
print('扩充后的数组：',matrix)

listB = [1,2,3,4]
for i in range(2)
	listA.extend(listB)
print listA
运行结果：[[1,2,3,4], [1,2,3,4]]

matrix1=[['aa','bb'],['cc','dd'],['ee','ff']]
print('数组matrix1[0][1]',matrix1[0][1])
print('数组matrix1的长度：',len(matrix1))

#打印二维数组的行
for i in range(len(matrix1)):
    print(matrix1[i])

#打印二维数组的每一个值
for i in range(len(matrix1)):
    for k in range(len(matrix1[i])):
        print(matrix1[i][k])

以下是运行结果：

扩充后的数组： [['aa', 'bb', 'cc', 'dd'], ['aa', 'bb', 'cc', 'dd'], ['aa', 'bb', 'cc', 'dd']]
数组matrix1[0][1] bb
数组matrix1的长度： 3
['aa', 'bb']
['cc', 'dd']
['ee', 'ff']
aa
bb
cc
dd
ee
ff

注：一维数组，扩展成二维数组