小编vai*_*ain的帖子

我想提取运算符,如:+,-,/,*和(,),_字符串

例如.

a-2=b
(c-d)=3

输出:

- ,=, (, -, ), = 

这不起作用:

re.finditer(r'[=+/-()]*', text)

我试图设置IMAGES_STORE为相对路径,但我收到错误,如果我指定IMAGES_STORE为完整路径它工作正常/home/vaibhav/scrapyprog/comparison/eScraperInterface/images

我得到的错误是在链接 实际上它给了我RuntimeError: OSError: [Errno 20] Not a directory: '/tmp/eScraper-1371463750-Lm8HLh.egg/images'错误,但如果我设置完全IMAGE_STORE路径它工作正常可以有人告诉我如何指定相对路径...因为我需要在各种系统部署此项目...这就是我需要相对路径的原因....

import os
#------------------------------------------------------------------------------ 

projectDirPath = os.path.abspath(os.path.dirname((os.path.dirname(__file__))))
imagesDIRPath =  projectDirPath + "/images"

BOT_NAME = 'eScraper'
DOWNLOADER_DEBUG = True
CONCURRENT_REQUESTS = 200
AUTOTHROTTLE_DEBUG = True
AUTOTHROTTLE_ENABLED= True
DEPTH_STATS_VERBOSE = True

SPIDER_MODULES = ['eScraper.spiders']
NEWSPIDER_MODULE = 'eScraper.spiders'
COMMANDS_MODULE = 'eScraper.commands'
ITEM_PIPELINES = ['eScraper.pipelines.EscraperPipeline',
                  'eScraper.pipelines.MySQLStorePipeline']

IMAGES_STORE = imagesDIRPath


DOWNLOADER_MIDDLEWARES = {
                          'eScraper.rotate_useragent.RotateUserAgentMiddleware' :400,
                          'scrapy.contrib.downloadermiddleware.useragent.UserAgentMiddleware' : None
                          }


#------------------------------------------------------------------------------

我的项目结构:

??? eScraperInterface
?   ??? build
?   ? …

我想将所有模型数据导出到CSV文件中:

models.py

import ast
import uuid
import base64
from django.db import models
from django.contrib import admin
from qlu.settings import HOST_NAME,STATS_URI
from django.core.validators import URLValidator
#------------------------------------------------------------------------------ 


class short_url(models.Model):
    """
        This is a short_url class 
    """
    blocked = models.BooleanField(default=False)                                # To check whether URL is blocked or not 
    updated_at = models.DateTimeField(auto_now=True)                            # When URL is updated
    url = models.TextField(validators=[URLValidator()])                         # URL entered by the user
    created_at = models.DateTimeField(auto_now_add=True)                        # When URL is created
    url_hash = models.CharField(max_length=10,unique=True,db_index=True)        # base64 encoded URL id  

    def …

我想突出显示当前的“#id”片段：

就像 URL 是： http://localhost:4321/store/zapakshop/#943

那么 id=943 应该突出显示..

我试过这个，但它不起作用：

$(document).ready(function () {
    $(window.location.hash).effect("highlight", {
        color: "#FF0000"
    }, 3000);       
    });

帮我...

我正在尝试部署 scrapy 项目。但出现错误：我的 scrapy.cfg 文件是：

[settings]
default = eScraper.settings

[deploy]
url = http://localhost:8680/
project = eScraper

我使用这个命令来部署：scrapy deploy default -p eScraper 但是出现错误

Building egg of eScraper-1369325126
'build/scripts-2.7' does not exist -- can't clean it
zip_safe flag not set; analyzing archive contents...
Deploying eScraper-1369325126 to http://localhost:8680/addversion.json
Deploy failed: <urlopen error [Errno 111] Connection refused>

我也尝试更改端口，但它不起作用，我也尝试使用上面的命令与 sudo 但什么都没有......有人可以帮助我......

我试图将scrapy服务器作为守护进程运行.我试过这个链接 但是每当我运行这个命令时我都会收到错误:

sudo apt-get install scrapyd-0.14
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package scrapyd-0.14
E: Couldn't find any package by regex 'scrapyd-0.14'

我可以从我的scrapy项目文件夹运行scrapy服务器,但我想将它作为后台服务(守护进程)运行..我正在使用 scrapy version : Scrapy 0.16.5

我该怎么做...请帮帮我..

我正在尝试django-progressbarupload app向我的 Django 应用程序添加进度条。但它不起作用......django-progressbarupload app模板标签加载正常，文件也上传到服务器，但进度条没有显示......并且它们在控制台上没有javascript错误......我已经遵循了这个教程进行操作

谁能告诉我如何向 Django 应用程序添加进度条

我的表单中有一个 DecimalField，我想限制min_value=0.1和max_value=99.99

purity_percent = forms.DecimalField(max_value=99.99, min_value=0.1, decimal_places=2)

但是当我尝试输入等于0.1或99.99我将无法工作的值时，我会收到这些错误

For 0.1 : Ensure this value is greater than or equal to 0.1.

For 99.99 : Ensure this value is less than or equal to 99.99.

我该如何将这些也包含在限制中？

我正在尝试发出POST请求但是收到此错误:

Traceback (most recent call last):
  File "demo.py", line 7, in <module>
    r = requests.post(url, data=payload, headers=headers)
  File "/usr/local/lib/python2.7/dist-packages/requests/api.py", line 87, in post
    return request('post', url, data=data, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/requests/api.py", line 44, in request
    return session.request(method=method, url=url, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/requests/sessions.py", line 266, in request
    prep = req.prepare()
  File "/usr/local/lib/python2.7/dist-packages/requests/models.py", line 215, in prepare
    p.prepare_body(self.data, self.files)
  File "/usr/local/lib/python2.7/dist-packages/requests/models.py", line 338, in prepare_body
    body = self._encode_params(data)
  File "/usr/local/lib/python2.7/dist-packages/requests/models.py", line 74, in _encode_params
    for k, vs in to_key_val_list(data):
ValueError: too many values to …

我有一个DeleteView.其中我想访问相关的对象ID.当用户发出POST请求时.

视图:

class DeletePacketView(LoginRequiredMixin, DeleteView):

    model = Packet
    template_name = DELETE_PACKET_TEMPLATE

    def get_success_url(self):

        # Return to customer home
        return reverse('myapp:view_customer',
                       kwargs={'pk': self.object.customer.id
                               }
                       )

    def post(self, request, *args, **kwargs):

        html = """
               <html>
                   <head>
                       <script>window.onunload = refreshParent; function refreshParent() {
                               window.opener.location.href=%s;
                               }
                       </script>
                   </head>
                   <body>
                   <h1>object deleted successfully</h1>
                   <button type="button" onclick="window.close()">OK</button>
                   </body>
               </html>
               """ % reverse('myapp:view_customer',
                              kwargs={'pk': self.object.customer.id
                                      }
                              )
        super(DeletePacketView, self).post(request, *args, **kwargs)
        return HttpResponse(html)

但是当我尝试提交表单时,我收到错误.

追溯:

Environment:    

Request Method: POST
Request URL: http://localhost:8000/delete/packet/96/

Django Version: 1.7
Python Version: …