显然你的游戏客户端无法连接到服务器。

n = Network()
player = int(n.getP()) # <<< here you got an exception

-

class Network:
def __init__(self):
    self.client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    self.server = "10.11.250.207"
    self.port = 5555
    self.addr = (self.server, self.port)
    self.p = self.connect()  # <<< this value is of None type

def getP(self):
    return self.p

def connect(self):
    try:
        self.client.connect(self.addr)
        return self.client.recv(2048).decode()  # << somewhere here an exception occures
    except:  # <<< but it gets cought here
        pass # <<< and method returns None

您确定您的服务器正在运行吗？您必须在单独的控制台窗口中与客户端同时运行它。