python读取csv文件绘制气温图，x轴为日期，并填充颜色

 

代码实现：

 

import csv

from matplotlib import pyplot as plt

from datetime import datetime

 

date=[]

airmax=[]

airmin=[]

with open(r'C:\Users\Administrator\Desktop\新建文本文档 (3).csv') as cs:

    read=csv.reader(cs)

    header=next(read)

    for i in read:

        date.append(datetime.strptime(i[3],'%Y/%m/%d'))#datetime.strptime(),转换成日期格式，第一个参数是所需的日期字符串，第二参数是告诉python如何设置字符串

        airmax.append(int(i[0]))

        airmin.append(int(i[1]))

    print(airmax)

    print(date)

fig=plt.figure(dpi=80,figsize=(10,6))       

plt.plot(date,airmax,c='red')

plt.plot(date,airmin)

fig.autofmt_xdate() #设置x轴日期自动适应占位，防止重叠

plt.fill_between(date,airmax,airmin,facecolor='yellow',alpha=0.1)#填充最大最小值区间的范围，facecolor颜色，alpha色度深浅

plt.show()