为什么矩阵填充了像这样的namedtuples? 正确插入索引 ,以及如何解决它? from collections import namedtuple
Point = namedtuple('Point', ['x', 'y'])
m, n = 3, 3
matrix = [[None] * n] * m
for i in range(m):
for j in range(n
我写信给加给两个矩阵是如下代码: A=[[2,3,4],[4,2,1]]
B=[[5,9,1],[2,4,2]]
R=[[0,0,0],[0,0,0]]
for i in range(1):
for j range(2):
R[i][j]=A[i][j]+B[i][j]
for r in R:
print(r)
但每当我运行这段代码就给出了这样的错误:
我比较各种方式来解决线性系统的运行时间,我发现了一个奇怪的模式。我正在测试的解决方法是la.solve(),la.inv()和la.lu_factor_solve()。 import scipy.linalg as la
import numpy as np
from time import time
from matplotlib import pyplot as plt
N = 20