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python - 如何修复客户端/服务器中的错误（重新提问）

问题描述

我想从我的列表中选择一个随机元素，所以我使用random.sample(output, 1)然后删除它，但首先我将此元素传输到客户端进程，然后再删除它。我想要做的是让客户确认它是否想要所述元素，如果它说不，那么不要删除它。我试图实现这一点，但不是在运行服务器时出现错误，而是在运行客户端进程并连接到服务器后出现错误。真的很想让这个工作，所以感谢您的帮助！

此外，给出的错误不在连接本身，而是在它们之间的数据传输中，在服务器端的 threaded_client 函数中，特别是在定义 stock 变量时。它说 AttributeError: 'builtin_function_or_method' 对象没有属性 'sample'

服务器代码：

import socket
from _thread import *
import random

PORT = 5050
HOST = socket.gethostbyname(socket.gethostname())
ADDR = (HOST, PORT)
ThreadCount = 0
tcp = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
records = [('Empresa:', 'Altri', 'Cotação:', 5.37), ('Empresa:', 'BCP', 'Cotação:', 0.13),
           ('Empresa:', 'Corticeira Amorim', 'Cotação:', 10.58), ('Empresa:', 'CTT', 'Cotação:', 5.12),
           ('Empresa:', 'EDP Renováveis', 'Cotação:', 20.64),
           ('Empresa:', 'EDP', 'Cotação:', 4.67), ('Empresa:', 'Galp', 'Cotação:', 8.70),
           ('Empresa:', 'Ibersol', 'Cotação:', 5.82), ('Empresa:', 'Jerónimo Martins', 'Cotação:', 16.83),
           ('Empresa:', 'Mota-Engil', 'Cotação:', 1.35),
           ('Empresa:', 'NOS', 'Cotação:', 3.03), ('Empresa:', 'Novabase', 'Cotação:', 4.60),
           ('Empresa:', 'PHAROL', 'Cotação:', 0.11), ('Empresa:', 'REN', 'Cotação:', 2.37),
           ('Empresa:', 'Semapa', 'Cotação:', 11.50), ('Empresa:', 'Sonae', 'Cotação:', 0.80),
           ('Empresa:', 'Sonac', 'Cotação:', 0.77), ('Empresa:', 'The Navigator Company', 'Cotação:', 2.96)]


def create_random_numbs(input_list):
    output_numbers = []
    for given_number in input_list:
        max = given_number * 1.25
        min = given_number * 0.75
        random_number = random.random()
        random_number_in_desired_range = min + (random_number * (max - min))
        output_numbers.append(random_number_in_desired_range)
    return output_numbers


def swap():
    input_numbers = [x[-1] for x in records]
    new_numbers_in_desired_range = create_random_numbs(input_numbers)
    new_records = []
    for item, new_number in zip(records, new_numbers_in_desired_range):
        item_as_list = list(item)
        item_as_list[-1] = new_number
        new_records.append(tuple(item_as_list))
    return new_records


output = swap()
swap()

try:
    tcp.bind(ADDR)
except socket.error as e:
    print(str(e))

print("A aguardar ligação")
tcp.listen(10)
PORT = 5050
HOST = socket.gethostbyname(socket.gethostname())
ADDR = (HOST, PORT)
ThreadCount = 0
tcp = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

try:
    tcp.bind(ADDR)
except socket.error as e:
    print(str(e))

print("Awaiting conn")
tcp.listen(10)

def threaded_client(connection):
    connection.send(str.encode('Bem vindo à bolsa'))
    stock = random.sample(output, 1)
    order = str(stock)
    while True:
        data = connection.recv(2048)
        if not data:
            break
        print(data.decode('utf-8'))
        tcp.send(str.encode(('Do you want this stock?' + order)))
        reply = connection.recv(2048)
        print(reply.decode('utf-8'))
        if (reply == 'Y'):
            tcp.send(str.encode(order))
            output.remove(order)
        elif (reply == 'N'):
            break
        else:
            tcp.send(str.encode('Insert valid letter'))

    connection.close()

客户端代码：

import socket

Client = socket.socket(socket.AF_INET, socket. SOCK_STREAM)
PORT = 5050
HOST = socket.gethostbyname(socket.gethostname())
ADDR = (HOST, PORT)
compras = []

print('Awaiting conn')
try:
    Client.connect(ADDR)
except socket.error as e:
    print(str(e))

Response = Client.recv(1024)
while True:
    Client.send(str.encode('I wanna trade!'))
    Response = Client.recv(1024)
    print(Response.decode('utf-8'))
    Check = input('Y/N: ')
    Client.send(str.encode(Check))
    final = Client.recv(1024)
    compras.append(final.decode('utf-8'))
Client.close()

标签： python

解决方案

你只是向我们展示了你的部分代码，所以我们不能做太多。我猜你有from random import random，这就是导致你的 AttributeError 的原因。导入随机函数，而不是随机模块。你需要import random.

鉴于该错误，您的服务器代码都没有运行过。你encode拼错了enconde。您正在从 中获取样本output。但您正在将其从records.

可以想象，这不是进行客户端/服务器设置的好方法。你不想反复来回交换东西。

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