API/Examples

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Revision 10 as of 2009-11-25 20:38:33

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Launchpad Help > API > Examples

Contents

  1. Find out if your launchpadlib version is recent enough (>= 1.5.1)
  2. Hello Launchpad!
  3. Does a bug have a release target?
  4. Listing the current package versions in a particular distroseries
  5. Get dsc-files for sources in an archive

This page has a bunch of examples of how to use launchpadlib and the Python APIs. Think of it like a cookbook that you can add your favourite recipe to.

If this duplicates launchpadlib or API/Uses too much, then please merge or edit pages as needed.

Find out if your launchpadlib version is recent enough (>= 1.5.1)

   1 import launchpadlib
   2 print launchpadlib.__version__

1.5.1 or above is the answer you're looking for; all subsequent examples assume you have at least that recent a launchpadlib.

Hello Launchpad!

Ever wanted to have Launchpad greet you by your own name? Now you can, in the comfort of your own home. 

   1 from launchpadlib.launchpad import Launchpad, EDGE_SERVICE_ROOT
   2 launchpad = Launchpad.login_with(
   3     'hello-world', EDGE_SERVICE_ROOT)
   4 print 'Hello, %s!' % launchpad.me.display_name

The hello-world bit is the name of the application and EDGE_SERVICE_ROOT means connect to the edge server.

Does a bug have a release target?

   1 from launchpadlib.launchpad import Launchpad,  EDGE_SERVICE_ROOT
   2 
   3 def has_target(bug, series):
   4     series_url = str(series)
   5     for task in bug.bug_tasks:
   6         if str(task).startswith(series_url):
   7             return True
   8     return False
   9 
  10 launchpad = Launchpad.login_with(
  11     'hello-world',  EDGE_SERVICE_ROOT)
  12 b = launchpad.bugs[324614]
  13 ubuntu = launchpad.distributions["ubuntu"]
  14 jaunty = ubuntu.getSeries(name_or_version="jaunty")
  15 has_target(b, jaunty)
  16 ### ==> should evalute to True

Listing the current package versions in a particular distroseries

   1 from launchpadlib.launchpad import Launchpad
   2 
   3 launchpad = Launchpad.login_with(
   4     'hello-world', 'production')
   5 ubuntu = launchpad.distributions["ubuntu"]
   6 archive = ubuntu.main_archive
   7 series = ubuntu.current_series
   8 archive.getPublishedSources(exact_match=True, source_name="apport", distro_series=series)[0].source_package_version
   9 ### ==> should return u'0.123'

Get dsc-files for sources in an archive

   1 import re
   2 import urlparse
   3 
   4 ### See previous examples for how to get an archive.
   5                 
   6 def create_webroot_url_from_self_link(self_link):
   7     scheme, netloc, _, _, _ = urlparse.urlsplit(self_link)
   8     netloc = netloc.lstrip("api.")
   9     return u"%s://%s/" %(scheme, netloc)
  10     
  11 def get_dsc(archive):
  12     re_version = re.compile(r"^\d+\:")
  13     x = archive.getPublishedSources()
  14     webroot = create_webroot_url_from_self_link(archive.self_link)
  15     for i in x:
  16         version = i.source_package_version
  17         version = re_version.sub("", version, 1)
  18         yield "%s~%s/+archive/+files/%s_%s.dsc" \
  19             %(webroot, archive.owner.name, i.source_package_name, version)