问题描述
我想从我的列表中随机选择一个元素,所以我使用 random.sample(output,1)
然后将其删除,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,则不要删除它。我试图实现这一点,但不是在运行服务器时出错,而是在运行客户端进程并连接到服务器后出错。真的很想让这个工作,所以感谢帮助!
另外给出的错误不是在连接本身,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',0.13),'Corticeira Amorim',10.58),'CTT',5.12),'EDP Renováveis',20.64),'EDP',4.67),'Galp',8.70),'Ibersol',5.82),'Jerónimo Martins',16.83),'Mota-Engil',1.35),'NOS',3.03),'Novabase',4.60),'PHAROL',0.11),'REN',2.37),'Semapa',11.50),'Sonae',0.80),'Sonac',0.77),'The Navigator Company',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,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()
解决方法
您只向我们展示了您的部分代码,因此我们无法做太多事情。我猜您有 from random import random
,这就是导致您的 AttributeError 的原因。这会导入随机函数,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。您将 encode
拼错为 enconde
。您正在从 output
获取样品。但您正在将其从 records
中删除。
您可以想象,这不是进行客户端/服务器设置的好方法。您不想反复来回交换东西。