python数据写入列表并导出折线图

import csv

datas = [['商品名称','周一销售','周二销售','周三销售','周四销售','周五销售','周六销售','周日销售'],
         ['洗衣机', '2', '1', '2', '3','2','4','5'],
         ['冰箱', '1', '2', '3', '2', '4', '5', '4'],
         ['空调', '3', '4', '3', '4', '3', '6', '5']]
# '商品名称','周一销售','周二销售' ,'周三销售','周四销售','周五销售','周六销售','周日销售'
#'洗衣机', '2', '1', '2', '3','2','4','5'
#'冰箱', '1', '2', '3', '2', '4', '5', '4'
#'空调', '3', '4', '3', '4', '3', '6', '5'
#要改成你自己当前工程所在的路径 且创建对应的文件
#['1', '2', '3', '2', '4', '5', '4'],
with open('D:/Users/admin/PycharmProjects/pythonProject/sale.csv', 'w', newline='') as csvfile:
    writer = csv.writer(csvfile)
    for row in datas:
        writer.writerow(row)

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

plt.rcParams['font.sans-serif'] = ['SimHei']  # 显示中文标签
plt.rcParams['axes.unicode_minus'] = False  # 这两行需要手动设置

x,y=np.loadtxt("D:/Users/admin/PycharmProjects/pythonProject/example_csv.txt",
               delimiter=",",
               unpack=True)

plt.plot(x,y,label="空调销售数量")

plt.xlabel("x")

plt.ylabel("y")
plt.title("销售折线图")

plt.legend()
plt.show()