import requests
import re
import csv
import pandas as pd
import matplotlib.pyplot as plt
headers = {
    "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36"
}
message = []
for page in range(16):
    if page == 0:
        url = "https://top.chinaz.com/gongsi/index_zhuce.html"
    else:
        url = "https://top.chinaz.com/gongsi/index_zhuce_{}.html".format(page + 1)
    response = requests.get(url, headers=headers)
    html = response.text
    company = re.findall('<a.*?target="_blank">(.+?)</a></h3>', html)
    m=re.findall('<em>(.*?)亿</em>注册资本', html)
    pageOne = list(zip(company,m))
    message.extend(pageOne)
with open("content.csv", "w") as f:
    w = csv.writer(f)
    w.writerows(message)
df = pd.read_csv("content.csv", names=["company","m"],encoding="gbk")
df.head()
plt.rcParams['font.sans-serif'] = ['SimHei']  
plt.figure(figsize=(20,10))
plt.bar(df["company"][:20],df["m"][:20])
plt.xticks(range(len(df["company"][:20])),df["company"][:20],rotation=90)
for x,y in zip(range(len(df["m"][:20])),df["m"][:20]):
    plt.text(x,y,y,ha="center",va='bottom')
plt.title("注册资金最多公司 top20")
plt.xlabel("公司")
plt.ylabel("资金（亿元）")
plt.show()