从文件加载数据

import matplotlib.pyplot as plt
import matplotlib
import csv

# 设置中文字体
matplotlib.rcParams['axes.unicode_minus'] = False
matplotlib.rcParams['font.sans-serif'] = ['Microsoft YaHei']
matplotlib.rcParams['font.family']='sans-serif'

x = []
y = []

with open('example.txt','r') as csvfile:
    plots = csv.reader(csvfile, delimiter=',')
    for row in plots:
        x.append(int(row[0]))
        y.append(int(row[1]))

plt.plot(x,y, label='从文件加载数据!')
plt.xlabel('x')
plt.ylabel('y')
plt.title('编程字典-matplotlib教程')
plt.legend()
plt.show()

1,5
2,3
3,4
4,7
5,4
6,3
7,5
8,7
9,4
10,4