python基础用二维数组表示矩阵

来源：互联网收集：自由互联发布时间：2022-06-15

3 4 0 0 0 255 0 0 255 0 0 30 255 255 n , m = map ( int , input (). split ()) #n行m列矩阵 a = [ list ( map ( int , input (). split ())) for i in range ( n )] b = [[ 0 for j in range ( m )] for i in range ( n )] print ( a ) print ( a [ 0

3 4
0 0 0 255
0 0 255 0
0 30 255 255n,m = map(int,input().split())#n行m列矩阵
a = [list(map(int,input().split())) for i in range(n)]
b = [[0 for j in range(m)] for i in range(n)]
print(a)
print(a[0][3])
print(b)