Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Neither of your functions <em>returns</em> anything. The default then is to return <code>None</code>, resulting in your error.</p> <p>Add <code>return</code> statements to your functions instead of printing the results. You are gathering lists of links, so you'll need to alter your code to return the lists and concatenate the two lists, or write them to the output file separately:</p> <pre><code>def jobsinghana(): site = "http://www.jobsinghana.com/jobs" hdr = {'User-Agent' : 'Mozilla/5.0'} req = urllib2.Request(site, headers=hdr) mayday = urllib2.urlopen(req) soup = BeautifulSoup(mayday) return map(str, soup.find_all('a', {'class' : 'hover'})) def modernghana(): site = "http://www.modernghana.com/GhanaHome/classifieds/list_classifieds.asp? menu_id=7&amp;sub_menu_id=362&amp;gender=&amp;cat_id=173&amp;has_price=2" hdr = {'User-Agent' : 'Mozilla/5.0'} req = urllib2.Request(site, headers=hdr) jobpass = urllib2.urlopen(req) soup = BeautifulSoup(jobpass) jobs = soup.find_all('a', href = re.compile('show_classifieds')) result = [] for a in jobs: header = a.parent.find_previous_sibling('h3').text a.string = header result.append(str(a)) return result jobsinghana_links = jobsinghana() modernghana_links = modernghana() with open('content.html', 'w') as alllinks: alllinks.write("\n".join(jobsinghana_links + modernghana_links)) </code></pre> <p>If you need to skip links you found before, you'll have to read in the links, preferably into a set, to test against when scanning again:</p> <pre><code>def read_existing(): with open('content.html') as alllinks: return {line.strip() for line in alllinks} existing = read_existing() jobsinghana_links = jobsinghana(existing) modernghana_links = modernghana(existing) </code></pre> <p>and in the two functions reading links, filter out any link already present in <code>existing</code>, using <code>if link in existing:</code> tests.</p>
    singulars
    1. This table or related slice is empty.
    1. POBeautifulSoup: Extract links to file and append new links only on subsequent rerun
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USMartijn Pieters
    1. USMartijn Pieters
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POBeautifulSoup: Extract links to file and append new links only on subsequent rerun
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COThanks @Martijn, but I made the changes you suggested and now I'm getting the error as `TypeError: sequence item 0: expected string, Tag found`
      singulars
      1. PO
      1. USfromPythonImportNoob
    2. CORight, adjusted `jobsinghana()` to return strings too. Are you certain you want to write `<a href>` tags here and not the URLs themselves, btw?
      singulars
      1. PO
      1. USMartijn Pieters
    3. COI think I want the `<a href>` tags as well because I want them to display automatically as a link for a single page Django app I'm putting together. It's actually my first dabble into programming though so I may be wrong but I want to get the whole concept working in Python before I move on to putting it together as a Django app. Thanks
      singulars
      1. PO
      1. USfromPythonImportNoob
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload