Python网络爬虫

1.python爬取百度翻译

 1 import requests
 2 # 指定 url
 3 url = "https://fanyi.baidu.com/sug"
 4 # 要翻译的词
 5 keyword = input("需要翻译的词：")
 6 data = {
 7        "kw": keyword
 8          }
 9 # UA 伪装
10 header = {
11         "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.90 Safari/537.36"
12         }
13 # 发送请求
14 response = requests.post(url = url, data = data, headers = header).json()
15 print(response["data"][0]["v"])

2.分别基于TCP和UDP开发一个聊天小程序，实现服务端和客户端间可以互发消息

 #服务端
 1 import socket
 2 try :
 3     s = socket.socket()
 4     s.bind(('4407-08', 9))
 5     s.listen(5)
 6     print('服务端准备完毕，等待客户端连接')
 7     con, address = s.accept()
 8     print('客户端已连接上服务端，连接地址：', address)
 9     while True :
10         message = con.recv(1024).decode('utf-8')
11         print('服务端接收：', message)
12         if message :
13             reply = input("服务端：")
14             con.send(reply.encode('utf-8'))
15             print('服务端发送：', reply)
16         else :
17             print('客户端不再发送消息')
18             break
19     con.close()
20 except Exception as e :
21     print('建立服务端失败', e)

 #客户端 
 1 import socket
 2 try :
 3     s = socket.socket()
 4     #hostname = socket.gethostname()
 5     s.connect(('4407-0', 9))
 6     message = input('客户端：')
 7     while message :
 8         s.send(message.encode('utf-8'))
 9         response = s.recv(1024).decode('utf-8')
10         print('服务端：', response)
11         message = input('客户端：')
12     s.close()
13 except Exception as e :
14     print('建立客户端失败', e)

posted on 2021-12-17 15:31 忘末阅读(51) 评论(0) 收藏举报