From 42a063e5eb00579204685bf5166089e229282e80 Mon Sep 17 00:00:00 2001
From: hnu202401010402 <3855575255@qq.com>
Date: Tue, 24 Dec 2024 16:39:07 +0800
Subject: [PATCH] ADD file via upload

---
 500强（1).py | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 500强（1).py

diff --git a/500强（1).py b/500强（1).py
new file mode 100644
index 0000000..3c4a6cd
--- /dev/null
+++ b/500强（1).py
@@ -0,0 +1,83 @@
+import requests
+import re
+import csv
+import pandas as pd
+import matplotlib.pyplot as plt
+import warnings
+
+warnings.filterwarnings("ignore")
+headers = {
+    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36"
+}
+message = []
+message2 = []
+
+
+def transform(capitals):
+    capital1 = []
+    for capital in capitals:
+        if capital:
+            numb = re.findall(r'\d+\.?\d*', capital)
+            if capital[0:5] == "(人民币)" or capital[-5:] == "万元人民币" or capital[-5:] == "万人民币元" or capital[
+                                                                                                -4:] == "万人民币" or capital[
+                                                                                                                  -2:] == "万元" or capital[
+                                                                                                                                  -1:] == "万":
+                capital = round(float(numb[0]) / 10000, 2)
+            # 港币和人民币的兑换：0.9392
+            elif capital[0:4] == "(港币)" or capital[-3:] == "万港币":
+                capital = round(float(numb[0]) * 0.9392 / 10000, 2)
+            # 美元和人民币的兑换：7.1876
+            elif capital[-3:] == "万美元":
+                capital = round(float(numb[0]) * 7.1876 / 10000, 2)
+            else:
+                capital = round(float(numb[0]), 2)
+        capital1.append(capital)
+    return capital1
+def getInfo(html):
+    company = re.findall('<a.*?target="_blank">(.*?)</a></h3>', html)
+    person = re.findall('法定代表人：</span>(.*?)</p>', html)
+    signDate = re.findall('注册时间：</span>(.*?)</p>', html)
+    category = re.findall('证券类别：</span>(.*?)</p>', html)
+    pageOne = list(zip(company, person, signDate, category))
+    message.extend(pageOne)
+
+def save_message(list_message):
+    list1 = list_message[0]
+    with open("content1.csv", "w", encoding='utf-8') as f:
+        w = csv.writer(f)
+        w.writerows(list1)
+
+def draw_first():
+    df = pd.read_csv("content1.csv", names=["company", "person", "signDate", "category"])
+    df1 = df.groupby("category").count()["company"]
+    plt.rcParams['font.sans-serif'] = ['SimHei']
+    labels = df1.index
+    sizes = df1.values
+    colors = ["blue", "red", "yellow", "green"]
+    explode = (0, 0, 0, 0.1)
+    plt.figure(figsize=(20, 10), dpi=80)
+    plt.subplot(131)
+    patches, text1, text2 = plt.pie(sizes, labels=labels, explode=explode, autopct='%3.2f%%', colors=colors, radius=1.5,
+                                    textprops={'fontsize': 15}, shadow=False, startangle=90)
+    plt.axis("equal")
+    plt.legend()
+    plt.title('中国500强公司各证券类型占比', pad=15, fontsize='xx-large', fontweight='heavy')
+    
+def main():
+    for page in range(16):
+        if page == 0:
+            url = "https://top.chinaz.com/gongsitop/index_500top.html"
+        else:
+            url = "https://top.chinaz.com/gongsitop/index_500top_{}.html".format(page + 1)
+
+        response = requests.get(url, headers=headers)
+        html = response.text
+        getInfo(html) 
+    list_message = [message, message2]
+    save_message(list_message) 
+    draw_first()
+    
+if __name__ == '__main__':
+    main()
+
+