我详细说明了为什么得到：typeerror：getsockaddrarg：AF_INET地址必须是元组，而不是字符串

Question

Okey，我盯着这两段代码看了很久，弄不清为什么会收到这个错误:typeerror:getsockaddrarg:AF_INET地址必须是tuple，而不是str。

import echoUDP

serveraddress = '0.0.0.0'
serverport = 5002

server2 = (server_address, server_port)
s.bind(server2)
print("Listening on " + server_address + ":" + str(server_port))
s.connect(('0.0.0.0',5005))

while True:
    client_address = ('0.0.0.0.')
    status = 'ok'
    print("Echoing back"+ str(status) + " to " + str(client_address))
    sen = s.sendto(status.encode(),clientaddress)

import socket

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

server_address = '0.0.0.0'
server_port = 5005

server = (server_address, server_port)
sock.bind(server)
print("Listening on " + server_address + " Port: " + str(server_port))
sock.connect(('0.0.0.0', 5002))
while True:
    client_address = ('0.0.0.0')
    status = 'ok'
    print("Echoing back "+ str(status) + " to " + str(client_address))
    sen = sock.sendto(status.encode(),client_address)

Answer 1

sock.sendto()的第二个参数应该是包含主机和端口的元组，例如('0.0.0.0',5005)。因此，在您的代码中，使用：

sen = sock.sendto(status.encode(), (server_address, server_port))

另外，('0.0.0.0')不是元组。（“0.0.0.0”,）将是长度为1的元组。在Python中创建元组时，括号是可选的--逗号的存在告诉Python您正在创建一个元组。这些例子应该可以说明。

a = 1,
type(a)
>>> tuple

b = 1, 2
type(b)
>>> tuple

c = (1)
type(c)
>>>> int