使用列表作为类参数

Question

class Interface():
    def __init__(self, localIP, remoteIP, numHops, hops):
        self.localIP = localIP
        self.remoteIP = remoteIP
        self.numHops = numHops
        self.hops = []

我想创建一个这样的实例：

hops, hopIps = stripRoute(ssh.run("traceroute -I " + str(dstHost.ip), hide=True))
host.interfaces.append(Interface(host.ip, dstHost.ip, hops, hopIps))
print(hops)
print(hopIps)

从打印语句中，我可以看到hopIps具有期望的值和长度1。但是，当我随后查询Interface的新实例时，仅numHops值被更新，跳数保持为空。

Answer 1

您将列表传递到__init__中，但从未使用过

class Interface():
    def __init__(self, localIP, remoteIP, numHops, hops):
        self.localIP = localIP
        self.remoteIP = remoteIP
        self.numHops = numHops
        self.hops = []

只需将您的列表分配给成员

class Interface():
    def __init__(self, localIP, remoteIP, numHops, hops):
        self.localIP = localIP
        self.remoteIP = remoteIP
        self.numHops = numHops
        self.hops = hops