Python matplotlib以日期为x轴作图代码实例

这篇文章主要介绍了Python matplotlib以日期为x轴作图代码实例,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

效果图如下

代码如下

from datetime import datetime, date, timedelta
import matplotlib.pyplot as plt
import tushare as ts

plt.rcParams['font.sans-serif'] = ['SimHei'] #显示中文
plt.rcParams['axes.unicode_minus']=False #用来正常显示负号

def get_riqi():
 count = 30
 i = 0
 today = date.today() #今天日期
 riqi_list=[]
 riqi_list.append(str(today))
 while(i<=count):
   i+=1
   riqi_list.append(str((today + timedelta(days=-i))))
 return riqi_list

def count(Data):
 data_list = []
 sum_list = []
 for data in Data:
   sum = 0
   list = []
   for jiage in data:
     sum+=jiage
     list.append(jiage)
   sum_list.append(round(sum,2))
   data_list.append(list)
 return sum_list,data_list

def get_juedui(Data):
 sum = 0
 data = []
 for i in Data[::-1]:
   sum += i
   data.append(sum)
 return data
technology = {
 '海康威视':'002415',
 '中兴通讯':'000063',
 '科大讯飞':'002230',
 '立讯精密':'002475',
 '蓝思科技':'300433',
 '歌尔股份':'002241'
}
store = [technology]
technology = []
def get_data(store,riqi_list):
 count = 0
 for Stock_pool in store:
   count +=1
   for stock in Stock_pool.values():
     data = ts.get_hist_data(stock,start=riqi_list[-1])
     if (count == 1):
       technology.append(data.loc[:, 'p_change'])
riqi_list = get_riqi()
get_data(store,riqi_list)
riqi_list = technology[0].index
rili = []
for riqi in riqi_list:
 rili.append(riqi[5:])
sum2,data2 = count(technology)
riqi_list = [datetime.strptime(d, '％m-％d').date() for d in rili]
count = 0
for i in data2:
 count+=1
 data = get_juedui(i)
 if(count==1):
  plt.plot(rili[::-1], data,label = '海康威视' )
 if(count==2):
  plt.plot(rili[::-1], data,label = '中兴通讯' )
 if(count==3):
  plt.plot(rili[::-1], data,label = '科大讯飞' )
 if(count==4):
  plt.plot(rili[::-1], data,label = '立讯精密' )
 if (count == 5):
  plt.plot(rili[::-1], data, label='蓝思科技')
 if (count == 6):
  plt.plot(rili[::-1], data, label='歌尔股份')
plt.legend()
plt.show()

来源：https://www.cnblogs.com/-wenli/p/11908743.html