python - How to get Html OnClick parameter using Scrapy -


i want extract nadlanid value link http://www.yad2.co.il/nadlan/sales.php?city=%e1%f0%e9%ee%e9%f0%e4+%e2%$

i used firebug check html code want extract, nadlanid value at: <td onclick="show_ad('2','1','/nadlan/salesdetails.php','nadlanid','1614569','644');"> בית אריה - יאיר שטרן </td>

i use following scrapy code check if scrapy parse above html code:

import scrapy  class quotesspider(scrapy.spider):     name = "quotes"     start_urls = [     'http://www.yad2.co.il/nadlan/sales.php?city=%e1%f0%e9%ee%e9%f0%e4+%e2%$ ]  def parse(self, response):     page = response.url.split("/")[-2]     filename = 'quotes-%s.html' % page     open(filename, 'wb') f:         f.write(response.body)`

but there no nadlanid in response.body.

how can nadlanid value?

in case want retrieve javascript function arguments html onclick attribute.

first find whole onclick text:

text = response.xpath("//td/@onclick").extract_first()

then it's possible use simple regular expression patterns find function arguments:

# capture in between () of show_ad < re.findall("show_ad\((.+?)\)", text)[0].split(',') >["'2'",   "'1'",   "'/nadlan/salesdetails.php'",   "'nadlanid'",   "'1614569'",   "'644'"]

Comments

Post a Comment

Popular posts from this blog

Is there a better way to structure post methods in Class Based Views -

i'm using class based views in django , never specify url in ajax calls , omit action parameter in form because know these requests go through post method of class based view. notice view - profile page make many requests depending on user updating on page - post method become convoluted , if/else mess example: def post(self, request, *args, **kwargs): # handle user changing available date if request.post.get('availabledate') != none: self.updateavailabledate(request) return jsonresponse({'result':'success'}) if request.post.get('newprojectname') != none: creative_user = creativeuserprofile.objects.get(id = request.user.id) project = project.create_project(creative_user, request.post['newprojectname']) project.save() return jsonresponse({'projectid': project.id }) if request.post.get('projectimage') != none , request.files['file']: proj...
Read more

performance - Why is XCHG reg, reg a 3 micro-op instruction on modern Intel architectures? -

i'm doing micro-optimization on performance critical part of code , came across sequence of instructions (in at&t syntax): add %rax, %rbx mov %rdx, %rax mov %rbx, %rdx i thought had use case xchg allow me shave instruction , write: add %rbx, %rax xchg %rax, %rdx however, dimay found agner fog's instruction tables , xchg 3 micro-op instruction 2 cycle latency on sandy bridge, ivy bridge, broadwell, haswell , skylake. 3 whole micro-ops , 2 cycles of latency! 3 micro-ops throws off 4-1-1-1 cadence , 2 cycle latency makes worse original in best case since last 2 instructions in original might execute in parallel. now... cpu might breaking instruction micro-ops equivalent to: mov %rax, %tmp mov %rdx, %rax mov %tmp, %rdx where tmp anonymous internal register , suppose last 2 micro-ops run in parallel latency 2 cycles. given register renaming occurs on these micro-architectures, though, doesn't make sense me done way. why wouldn't register renamer ...
Read more

c# - Asp.net web api : redirect unauthorized requst to forbidden page -

im trying redirect unauthorized request forbidden page instead i'm getting forbidden page in response body , how can fix ? here's startup class : app.createperowincontext(storecontext.create); app.createperowincontext<applicationusermanager>(applicationusermanager.create); app.createperowincontext<applicationsigninmanager>(applicationsigninmanager.create); app.usecookieauthentication(new cookieauthenticationoptions { authenticationtype = defaultauthenticationtypes.applicationcookie, expiretimespan = timespan.fromdays(30), }); app.useexternalsignincookie(defaultauthenticationtypes.externalcookie); app.usetwofactorsignincookie(defaultauthenticationtypes.twofactorcookie, timespan.fromminutes(5)); app.usetwofactorrememberbrowsercookie(defaultauthenticationtypes.twofactorrememberbrowsercookie); the method im trying reach : [httpget] [authorize(roles = "admin")] public string getcurrentusername() { return userman...
Read more