1. 客户端和服务器聊天，可以一直聊天，直到一方发送’拜拜’。然后就可以和下一个人一直聊
创建服务器：
import socket
def creat_server():
"""写一个服务器"""
server = socket.socket() # 创建套接字对象
server.bind(('10.7.153.167', 8000)) # 绑定IP地址和端口
server.listen(520) # 开始监听
while True:
connect, addr = server.accept()
while True:
message = input('服务器：')
connect.send(message.encode())
recv_data = connect.recv(1024)
connect.close()
creat_server()
创建客户端：
import socket
def creat_client():
client = socket.socket()
client.connect(('10.7.153.167', 8000))
while True:
data = client.recv(1024)
message = input('客户端：')
client.send(message.encode())
if message == '拜拜':
break
client.close()
creat_client()
2. 下载网络图片（https://ss1.bdstatic.com/70cFuXSh_Q1YnxGkpoWK1HF6hhy/it/u=2808438283,4249462766&fm=26&gp=0.jpg）到本地
import requests
url = 'https://ss1.bdstatic.com/70cFuXSh_Q1YnxGkpoWK1HF6hhy/it/u=2808438283,4249462766&fm=26&gp=0.jpg'
response = requests.post(url)
print(response.content)
data = response.content
with open('./tupian/2.png', 'wb') as f:
f.write(data)
