Python_讀取股票歷年經營績效_以遠東新1402為例_04_使用pandas畫直線圖

接著試驗pandas的繪圖功能，花了我好久的時間，原來要吃圖形的X與Y軸要吃資料形態要吃數字的Series，畫起圖來才會比較順手。 使用了pandas的plot繪製直線圖，程式碼修改如下：

# -*- coding: utf-8 -*-
"""
Created on Wed Jan  2 13:38:28 2019
@author: ryoliu
"""
import requests
from bs4 import BeautifulSoup
import pandas as pd
url = 'https://goodinfo.tw/StockInfo/StockBzPerformance.asp?STOCK_ID=1402'
headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) \
           Chrome/65.0.3325.181 Safari/537.36'}
r = requests.get(url, headers = headers)
r.encoding = 'utf-8'
soup = BeautifulSoup(r.text, 'html.parser')
rows = soup.find('div', {"id": "divFinDetail"}).find('table', {"class": "solid_1_padding_4_0_tbl"})
dfs = pd.read_html(str(rows))
df=pd.DataFrame(dfs[0]).iloc[3:19,0:3]
df.columns= ['years','stockcost','summarize']
df.stockcost=pd.Series(pd.to_numeric(df.stockcost))
df.years=pd.Series(pd.to_numeric(df.years))
df.plot(x='years',y='stockcost', kind='line')

執行結果如下：