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# -*- coding: utf-8 -*-
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"""
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Created on Tue May 31 13:44:13 2022
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@author: 86136
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"""
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import requests
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import re
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#设置headers
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headers={'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.64 Safari/537.36 Edg/101.0.1210.53'}
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# 存储内容
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message = []
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#获取17个页面的公司数据，共510个公司
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for page in range(17):
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# 组装url
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if page == 0:
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url = "https://top.chinaz.com/gongsi/index_zhuce.html"
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else:
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url = "https://top.chinaz.com/gongsi/index_zhuce_{}.html".format(page + 1)
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# 使用reqeusts模快发起 GET 请求
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response = requests.get(url, headers=headers)
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html = response.text
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# 使用 findall 函数来获取数据
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# 公司名
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company = re.findall('<a.*?target="_blank">(.+?)</a></h3>', html)
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money = re.findall('注册资本：</span>(.*?)</p>', html)
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pageOne = list(zip(company,money))
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# 合并列表
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message.extend(pageOne)
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#取前500强的公司数据
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message=message[0:500]
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#数据写入
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# 导入python中的内置模块csv
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import csv
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with open("content.csv", "w") as f:
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w = csv.writer(f)
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w.writerows(message)
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#数据可视化
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%matplotlib inline
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import pandas as pd
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# 读取数据
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df = pd.read_csv("content.csv", names=["company",'money'],encoding='gbk')
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lmoney=list(df['money'])[:20]
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lcompany=list(df['company'])[:20]
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#单位统一换算
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tmoney=[]
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for i in lmoney:
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p=''
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j=re.findall(r'\d+\.\d+',i)
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if j==[]:
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j=re.findall(r'\d+',i)
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for z in j:
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if '万' in i:
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p=round(float(z)*0.0001)
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elif '亿' in i:
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p=round(float(z))
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tmoney.append(p)
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#应用matplotlib作图
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import matplotlib.pyplot as plt
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plt.rcParams['font.sans-serif'] = ['SimHei']
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plt.rcParams['axes.unicode_minus'] = False
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tmoney.reverse()
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lcompany.reverse()
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y=tmoney
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x=lcompany
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colors=['green']*5+['cyan']*5+['blue']*5+['red']*5
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plt.barh(x,y,height=0.7,color=colors)
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plt.yticks(x,x)
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for i,j in zip(x,y):
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plt.text(j,i,j,fontsize=8)
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plt.title('注册资金最多的公司 top20')
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plt.ylabel('公司名字')
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plt.xlabel('注册资本/亿元')
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plt.show()
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