小编Tam*_*mpa的帖子

在ubuntu 12.04上,我得到了以下内容.

sudo apt-get install libxml2 libxml2-dev libxslt libxslt-dev
sudo gem install nokogiri
Building native extensions.  This could take a while...
ERROR:  Error installing nokogiri:
    ERROR: Failed to build gem native extension.

        /usr/bin/ruby1.9.1 extconf.rb
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- mkmf (LoadError)
    from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from extconf.rb:5:in `<main>'


Gem files will remain installed in /var/lib/gems/1.9.1/gems/nokogiri-1.5.9 for inspection.
Results logged to /var/lib/gems/1.9.1/gems/nokogiri-1.5.9/ext/nokogiri/gem_make.out

这是我的红宝石版本

ruby --version
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-linux]

我正在尝试安装使用刀-ec2为厨师.

我正在努力使用rc5的angular2-jwt文档

这是我的NgModule

import { AuthHttp } from 'angular2-jwt';



 @NgModule({
  imports: [ BrowserModule, 
             routing,
             HttpModule,
             FormsModule,

            ],
  declarations: [ 
                  AppComponent,
                  LoginComponent, 
                  NavbarComponent,
                  DashboardComponent,
                  ModelsComponent
                ],
  providers: [AuthGuard,
              ModelService,
              AuthHttp
              ],
  bootstrap: [ AppComponent ]
})
export class AppModule { }

这是我的服务

import { Injectable } from '@angular/core';
import {Http} from '@angular/http';
import 'rxjs/add/operator/map';
import { Model } from './model';
import { AuthHttp } from 'angular2-jwt';
import {Observable} from "rxjs/Rx";

@Injectable()
export class ModelService {
  private _url = "http://127.0.0.1:8050/test/model";

  constructor(private _http: Http,private …

Python请求有问题:

rs = requests.get(STREAM_URL, stream=True,headers=headers)

Process Process-1:
Traceback (most recent call last):
  File "/usr/lib/python2.7/multiprocessing/process.py", line 258, in _bootstrap
    self.run()
  File "/usr/lib/python2.7/multiprocessing/process.py", line 114, in run
    self._target(*self._args, **self._kwargs)
  File "oanda_streaming_pairs_server.py", line 287, in multistreamer
    rs = requests.get(STREAM_URL, stream=True,headers=headers)
  File "/usr/local/lib/python2.7/dist-packages/requests-2.12.0-py2.7.egg/requests/api.py", line 70, in get
    return request('get', url, params=params, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/requests-2.12.0-py2.7.egg/requests/api.py", line 56, in request
    return session.request(method=method, url=url, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/requests-2.12.0-py2.7.egg/requests/sessions.py", line 488, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/requests-2.12.0-py2.7.egg/requests/sessions.py", line 609, in send
    r = adapter.send(request, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/requests-2.12.0-py2.7.egg/requests/adapters.py", …

Angular2..为什么以及如何？

如何在angular2中执行以下if条件

    <td *ngFor="let val of rows;let j=index">
            IF J==0
                 <label>{{val}}</label>
            ELSE:
               <label style="color:#000000;font-size:12px;padding-top: 5px">{{val}}</label>

</td>

如何在python中将StringIO中的图像读入PIL？我将有一个stringIO对象.如何从中读取图像？我无法从文件中读取图像.哇!

from StringIO import StringIO
from PIL import Image

image_file = StringIO(open("test.gif",'rb').readlines())
im = Image.open(image_file)
print im.format, "%dx%d" % im.size, im.mode

Traceback (most recent call last):
  File "/home/ubuntu/workspace/receipt/imap_poller.py", line 22, in <module>
    im = Image.open(image_file)
  File "/usr/local/lib/python2.7/dist-packages/Pillow-2.3.1-py2.7-linux-x86_64.egg/PIL/Image.py", line 2028, in open
    raise IOError("cannot identify image file")
IOError: cannot identify image file

如果用户从具有脏表单的页面导航,我成功使用canDeactivate提供警告消息:

我正在使用的代码在这里:

    is_submit = false;
   canDeactivate() {
       //https://scotch.io/courses/routing-angular-2-applications/candeactivate
        if (this.myForm.dirty == true && this.is_submit==false){
            return window.confirm('Discard changes?');
        } //end if
        return true
    } // end  canDeactivate

这是我得到代码的地方:

https://scotch.io/courses/routing-angular-2-applications/candeactivate

但是我想使用angular2对话框.这是我的代码:

    //ts for the main component

    is_submit = false;
   canDeactivate() {
        if (this.myForm.dirty == true && this.is_submit==false){
            const config = new MdDialogConfig();
            config.disableClose=true;
            let dialogRef = this.dialog.open(DialogCanDeactive,config);
            dialogRef.afterClosed().subscribe(result => {
                if (result=='cancel'){
                    return false;
                } 
                if (result=='save'){
                    return true;
                } 
                if (result=='discard'){
                    return true;
                } 
            }); //end dialogRef
        } //end if
        return …

我只是想运行一个简单的测试示例,但我得到以下错误.我该如何解决？

import asyncio
import uvloop
import concurrent.futures
import time
asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())

async def do_some_work(x):

    while True:
        print("Waiting " + str(x))
        await asyncio.sleep(x)

if __name__ == '__main__': 


    loop = asyncio.new_event_loop()
    tasks = [asyncio.ensure_future(do_some_work(2)), 
             asyncio.ensure_future(do_some_work(5))]
    loop.run_until_complete(asyncio.gather(*tasks))

Traceback (most recent call last):
  File "/Users/worker_why.py", line 23, in <module>
    loop.run_until_complete(asyncio.gather(*tasks))
  File "uvloop/loop.pyx", line 1181, in uvloop.loop.Loop.run_until_complete (uvloop/loop.c:25184)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/asyncio/tasks.py", line 508, in ensure_future
    raise ValueError('loop argument must agree with Future')
ValueError: loop argument must agree with Future

我使用以下内容删除route53记录.我没有收到任何错误消息.

conn = Route53Connection(aws_access_key_id, aws_secret_access_key)
changes = ResourceRecordSets(conn, zone_id)
change = changes.add_change("DELETE",sub_domain, "A", 60,weight=weight,identifier=identifier)
change.add_value(ip_old)
changes.commit()

所有必填字段都存在且匹配..权重,标识符,ttl = 60等.\

例如

test.com. A 111.111.111.111 60 1 id1
test.com. A 111.111.111.222 60 1 id2

我想删除111.111.111.222和记录集.

那么,删除记录集的正确方法是什么？

对于记录集,我将有多个值,这些值由唯一标识符区分.当ip地址变为活动状态时,我想从route53中删除.我使用的是一个可怜的勒芒负载平衡.

Here is the meta of the record  want to delete.  
{'alias_dns_name': None,
  'alias_hosted_zone_id': None,
  'identifier': u'15754-1',
  'name': u'hui.com.',
  'resource_records': [u'103.4.xxx.xxx'],
  'ttl': u'60',
  'type': u'A',
  'weight': u'1'}



Traceback (most recent call last):
  File "/home/ubuntu/workspace/rtbopsConfig/classes/redis_ha.py", line 353, in <module>
    deleteRedisSubDomains(aws_access_key_id, aws_secret_access_key,platform=platform,sub_domain=sub_domain,redis_domain=redis_domain,zone_id=zone_id,ip_address=ip_address,weight=1,identifier=identifier)
  File "/home/ubuntu/workspace/rtbopsConfig/classes/redis_ha.py", line 341, in deleteRedisSubDomains …

1)我有一个数据包如下:

 "zookeeper":{
        "server1":"111.111.111.111",
        "server2":"222.222.222.222"
        },

2)在我的食谱中,我得到哈希如下.

data_bag("mydb")
db = data_bag_item("mydb", "rtb")
ZOOKEEPER = db['zookeeper']

3)同样在我的食谱中我有一个模板如下:

template "/etc/zookeeper/conf/zoo.cfg" do
  path "/etc/zookeeper/conf/"
  source "zoo.cfg.erb"
  owner "root"
  group "root"
  mode "0644"
 variables :zookeeper => #{ZOOKEEPER}
end

4)我需要让我的模板看起来像这样

server.1=111.111.111.111:2888:3888
server.2=222.222.222.222:2888:3888

我的问题是这个.如何将哈希传递给模板,以便循环哈希并创建temlplate？我不是一个强大的红宝石编码器.

例如:

count = 1
for server, ipaddress in zookeeper:
      server.count=ipaddress:2888:3888
      count = count + 1

我只想在python中发送带附件的电子邮件

import smtplib, os
from email.MIMEMultipart import MIMEMultipart
from email.MIMEBase import MIMEBase
from email.MIMEText import MIMEText
from email.Utils import COMMASPACE, formatdate
from email import Encoders

def send_mail(send_from, send_to, subject, text, files=[], server="localhost"):
    assert type(send_to)==list
    assert type(files)==list

    msg = MIMEMultipart()
    msg['From'] = send_from
    msg['To'] = COMMASPACE.join(send_to)
    msg['Date'] = formatdate(localtime=True)
    msg['Subject'] = subject

    msg.attach( MIMEText(text) )

    for f in files:
        part = MIMEBase('application', "octet-stream")
        part.set_payload( open(f,"rb").read() )
        Encoders.encode_base64(part)
        part.add_header('Content-Disposition', 'attachment; filename="%s"' % os.path.basename(f))
        msg.attach(part)

    smtp = smtplib.SMTP('smtp.gmail.com:587')
    smtp.login('fu@gmail.com','fu')
    smtp.sendmail(send_from, send_to, msg.as_string())
    smtp.close() …