小编Ell*_*val的帖子

我正在尝试从GitHub的Mono repo的tarball编译Mono 3.0.2.但是当我进入mcs文件夹时,编译失败:

if test -w /root/mono/mcs; then :; else chmod -R +w /root/mono/mcs; fi
    cd /root/mono/mcs && make --no-print-directory -s NO_DIR_CHECK=1 PROFILES=' net_2_0            net_3_5 net_4_0 net_4_5  ' CC='gcc' all-profiles
    Bootstrap compiler: Mono C# compiler version 3.0.3.0
    Makefile:43: warning: overriding commands for target 'csproj-local'
../build/executable.make:149: warning: ignoring old commands for target 'csproj-local'
    Makefile:43: warning: overriding commands for target 'csproj-local'
../build/executable.make:149: warning: ignoring old commands for target 'csproj-local'
    make[7]: *** No rule to make target '../../external/ikvm/reflect/*.cs', needed by '../class/lib/basic/basic.exe'. …

我试图在Scapy中编写一个简单的嗅探器,它只使用GET方法打印HTTP数据包.这是代码:

#!/usr/bin/python
from scapy.all import *

def http_header(packet):
        http_packet=str(packet)
        if http_packet.find('GET'):
                print GET_print(packet)
        print packet
def GET_print(packet1):
        print "***************************************GET PACKET****************************************************"
        print packet1

        print "*****************************************************************************************************"


sniff(iface='eth0',prn=http_header)

这是输出:

*****************************************************************************************************
None
T???
     )?pEa??@@???h??#/??t
                             ?}LGku???U
oTE??I(????9qi???S?????
                          XuW?F=???-?k=X:?
***************************************GET PACKET****************************************************
T???
     )?pE???@@???h??#/??t
                               ?LGku????
oTE??I?K??AH?*?e??>?v1#D?(mG5T?o????8?????????"?KT^?'?mB???]?????k>
                                                                                ?_x?X?????8V???w/?Z?=???N?À??\r?????)+}???l?c?9??j;???h??5?T?9H?/O??)??P
         ?Y?qf??%?_`??6x??5D?I3???O?
t??tpI#?????$IC??E??
                     ?G?
J??????=?]??v????b5^|P??DK?)uq?2????w?
                    tB??????y=???n?i?r?.D6?kI?a???6iC???c'??0dPqED?4????[?[??hGh???~|Y/?>`\6yP  Dq??T??M????f?;???????  gY???di?_x?8|
eo?p?xW9??=???v?Ye?}?T???y?^?C
-?_(?<?{????}???????r
$??J?k-?9????}??f?27??QK??`?GY?8??Sh???Y@8?E9?R??&a?/vk???6?DF`?/9?I?d( ??-??[A
                                                                                     ??)pP??y\?j]???8?_???vf?b????I7???????+?P<_`
*****************************************************************************************************

我期待的是:

GET / HTTP/1.1
    Host: google.com
    User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20140722 Firefox/24.0 Iceweasel/24.7.0
    Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
    Accept-Language: en-US,en;q=0.5
    Accept-Encoding: gzip, deflate
    Cookie: PREF=ID=758a20b5fbd4eac9:U=2b2dedf6c84b001f:FF=0:TM=1412150291:LM=1415430021:S=Q-QemmrLqsSsEA9i; NID=67=mRdkPVhtImrOTLi5I1e5JM22J7g26jAcdiDEjj9C5q0H5jj0DWRX27hCM7gLJBeiowW-8omSv-1ycH595SW2InWX2n1JMMNh6b6ZrRsZ9zOCC2a-vstOQnBDSJu6K9LO
    Connection: keep-alive …

使用Python Paho MQTT客户端最可靠的方法是什么？我希望能够处理因WiFi丢失导致的连接中断,并继续尝试重新连接,直到成功为止.

我所拥有的是以下内容,但有没有我不遵守的最佳实践？

import argparse
from time import sleep

import paho.mqtt.client as mqtt


SUB_TOPICS = ("topic/something", "topic/something_else")
RECONNECT_DELAY_SECS = 2


def on_connect(client, userdata, flags, rc):
    print "Connected with result code %s" % rc
    for topic in SUB_TOPICS:
        client.subscribe(topic)

# EDIT: I've removed this function because the library handles
#       reconnection on its own anyway.
# def on_disconnect(client, userdata, rc):
#     print "Disconnected from MQTT server with code: %s" % rc
#     while rc != 0:
#         sleep(RECONNECT_DELAY_SECS)
#         print …

我正在使用 terraform 创建一个 Kubernetes 服务帐户，并尝试从它创建的 Kubernetes Secret 中输出令牌。

resource "kubernetes_service_account" "ci" {
  metadata {
    name = "ci"
  }
}

data "kubernetes_secret" "ci" {
  metadata {
    name = "${kubernetes_service_account.ci.default_secret_name}"
  }
}

output "ci_token" {
  value = "${data.kubernetes_secret.ci.data.token}"
}

根据文档，由于 的计算值，这应该使数据块推迟获取其值直到“应用”阶段default_secret_name，但是当我运行terraform apply它时，它给了我这个错误：

Error: Error running plan: 1 error(s) occurred:

* output.ci_token: Resource 'data.kubernetes_secret.ci' does not have attribute 'data.token' for variable 'data.kubernetes_secret.ci.data.token'

添加depends_on到kubernetes_secret数据块没有任何区别。

如果我注释掉该output块，它会很好地创建资源，然后我可以取消注释它，再次应用，一切都正常运行，因为 Kubernetes Secret 已经存在。

我也在这里发了一个 Github …

如何动态创建我的类的子类并为其__init_subclass__()方法提供参数？

示例类：

class MyClass:
    def __init_subclass__(cls, my_name):
        print(f"Subclass created and my name is {my_name}")

通常我会这样实现我的子类：

class MySubclass(MyClass, my_name="Ellis"):
    pass

但是在my_name动态创建MyClass使用元类的子类时我将如何传入？通常我可以使用，type()但它没有提供my_name.

MyDynamicSubclass = type("MyDynamicSubclass", (MyClass,), {})