编码二维列表

Question

How can I encode 2D List here to send to the server, so that server can print the 2D List?

ERROR: AttributeError: 'list' object has no attribute 'encode'

CODE:

Client.py

from socket import *
serverName = "localhost"
serverPort = 12000
clientSocket = socket(AF_INET, SOCK_STREAM)
clientSocket.connect((serverName, serverPort))

input = [ 
            [1, 0, 1, 1, 0], 
            [1, 0, 0, 1, 0], 
            [1, 1, 1, 0, 1]
        ]

clientSocket.send(input.encode())

clientSocket.close()

Server.py

from socket import *
serverPort = 12000
serverSocket = socket(AF_INET, SOCK_STREAM)
serverSocket.bind(('', serverPort))
serverSocket.listen(1)

print("The server is ready to receive!")

while True:
    connectionSocket, addr = serverSocket.accept()
    array = connectionSocket.recv(1024).decode()
    print(array)
    connectionSocket.close()

Answer 1

If you only want the peer to be able to print , or send back the 2D list, you can directly send a string representation:

clientSocket.send(str(input).encode())

If you want it to be able to process the data as a 2D list, you should serialize the list, for example with json:

clientSocket.send(json.dumps(input).encode())

Then you can retrieve the list with:

list2D = json.loads(connectionSocket.recv(1024))

Answer 2

the simplest way to do it is to use serialization like JSON . Here is an example with your code, its convert your list into a JSON string and then to bytes before sending it: Client.py

from socket import *
import json
serverName = "localhost"
serverPort = 12000
clientSocket = socket(AF_INET, SOCK_STREAM)
clientSocket.connect((serverName, serverPort))

input = [ 
            [1, 0, 1, 1, 0], 
            [1, 0, 0, 1, 0], 
            [1, 1, 1, 0, 1]
        ]

clientSocket.send(json.dumps(input).encode('utf8'))

clientSocket.close()

Server.py

from socket import *
import json
serverPort = 12000
serverSocket = socket(AF_INET, SOCK_STREAM)
serverSocket.bind(('', serverPort))
serverSocket.listen(1)

print("The server is ready to receive!")

while True:
    connectionSocket, addr = serverSocket.accept()
    array = json.loads(connectionSocket.recv(1024).decode('utf8'))
    print(array)
    connectionSocket.close()