如何为矩阵Networkx分配节点名称？

我正在尝试在NetworkX中绘制图形。该网络连接30个节点和大约130个边缘。使用权重矩阵设置节点

A = [
    [0, 1.51, 0, 1.71, 0],
    [0, 0, 2.11, 1.81, 2.31],
    [0, 0, 0, 1.31, 1.41],
    [0, 0, 0, 0, 1.11],
    [0, 0, 0, 0, 0]]

如何从列表中将节点的名称分配给矩阵("A1", "K2", ... "Z30")？到目前为止，我只能为数字分配名称。

import matplotlib.pyplot as plt
import networkx as nx
import numpy as np

A = [[0, 1.51, 0, 1.71, 0],
     [0, 0, 2.11, 1.81, 2.31],
     [0, 0, 0, 1.31, 1.41],
     [0, 0, 0, 0, 1.11],
     [0, 0, 0, 0, 0]]

G = nx.from_numpy_matrix(np.matrix(A), create_using=nx.DiGraph)

layout = nx.spring_layout(G)
labels = nx.get_edge_attributes(G, "weight")
lab_node = dict((i, str(i)*3) for i in range(5))
nx.draw(G, layout)
nx.draw_networkx_nodes(G, layout, node_size=500)
nx.draw_networkx_edge_labels(G, layout, edge_labels=labels)
nx.draw_networkx_labels(G, layout, labels=lab_node, font_size=10, font_family='sans-serif')
plt.show()