The built-in function day31-python

1.udp multithreading

import socketserver

class MyServer(socketserver.BaseRequestHandler):
    def handle(self):
        print(self.request)
        print('收到客户端的消息是',self.request[0])
        self.request[1].sendto(self.request[0].upper(),self.client_address)


if __name__ == '__main__':
    s=socketserver.ThreadingUDPServer(('127.0.0.1',8086),MyServer) #多线程
    s.serve_forever()

from socket import *
ip_port=('127.0.0.1',8086)
buffer_size=1024

udp_client=socket(AF_INET,SOCK_DGRAM) #数据报

while True:
    msg=input('>>: ').strip()
    udp_client.sendto(msg.encode('utf-8'),ip_port)

    data,addr=udp_client.recvfrom(buffer_size)
    # print(data.decode('utf-8'))
    print(data)

from socket import *
ip_port=('127.0.0.1',8086)
buffer_size=1024

udp_client=socket(AF_INET,SOCK_DGRAM) #数据报

while True:
    msg=input('>>: ').strip()
    udp_client.sendto(msg.encode('utf-8'),ip_port)

    data,addr=udp_client.recvfrom(buffer_size)
    # print(data.decode('utf-8'))
    print(data)

2. Built-in functions

# # 三元运算
# # a = 1
# # result = "xiaoming" if a == 1 else "xiaogang"
# # print(result)
#

#
# # lambda 表达式
#
# # def func(arg):
# #     return arg + 1
# # print(func(2))
#

# # func = lambda *args : print(args)
# # print(func(1,2,3))
#

# # map
# # li = [1,2,3,4,5]
# # def func(s):
# #      return s + 1
# # ret = map(func,li)
# # print(list(ret))
#
# # print(list(map(lambda li : li + 1 ,li)))
#


# # filter 过滤
#
# # li = [22,33,44,55]
# #
# # def func(s):
# #     if s > 33:
# #         return s
# # ret = filter(func,li)
# # print(list(ret))
# #
# # print(list(filter(lambda s : s >33 ,li)))
#



# # reduce
#
from functools import reduce
#
# # li = ["a","l","e","x"]
# # def func(a,b):
# #     return a+b
# # ret = reduce(func,li)
# # print(ret)
#
# li = [1,2,3,4,5]
# print(reduce(lambda a,b : a +b ,li))
#
#
li = [1,2,3,4,5]
print(reduce(lambda a, b: a + b, li))

The built-in function day31-python

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