用python画折线图

import matplotlib.pyplot as plt
#设置默认字体，选择支持中文的字体以避免出现中文乱码情况
plt.rcParams['font.sans-serif'] = ['Arial Unicode MS']
from matplotlib.ticker import MultipleLocator, FormatStrFormatter
lst_temp3=[10, 16, 17, 14, 12, 10, 12, 6, 6, 7, 8, 9, 12, 15, 15, 17, 18, 21, 16, 16, 20, 13, 15, 15, 15, 18, 20, 22,
           22, 22, 24]
lst_temp10=[26, 26, 28, 19, 21, 17, 16, 19, 18, 20, 20, 19, 22, 23, 17, 20, 21, 20, 22, 15, 11,
            15, 5, 13, 17, 20, 11, 13, 12, 13, 6]
input_values=[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31]
fig,ax= plt.subplots() #fig表示整张图片，ax表示图片中的各个图表
ax.set_title("某市2019年3月份与十月份气温变化趋势图",fontsize=20) #文章标题
ax.set_xlabel("日期",fontsize=14)#横坐标标签
ax.set_ylabel("气温/℃",fontsize=14)#纵坐标标签
ax.plot(input_values,lst_temp3,marker='*',label=u'三月份')#横坐标数据+纵坐标数据+图例
ax.plot(input_values,lst_temp10,marker='o',label=u'十月份')

plt.legend() # 让图例生效
# 添加网格线
plt.grid(True,alpha = 0.5,axis = 'both',linestyle = ':')
plt.show()

这边使用的是python的matplotlib的包来进行画图

上面画的是一个月份天气折线图图，画图效果如下：