old_contents: import re
  
  from .models import CommCareBuild, CommCareBuildConfig
  
  
  def get_all_versions(versions=None):
      """
      Returns a list of all versions found in the database,
      plus those in the optional list parameter.
      """
      versions = versions or []
      db = CommCareBuild.get_db()
      results = db.view('builds/all', group_level=1).all()
      versions += [result['key'][0] for result in results]
      return sorted(list(set(versions)))
  
  
  def get_default_build_spec():
      return CommCareBuildConfig.fetch().get_default()
  
  
  def extract_build_info_from_filename(content_disposition):
      """
  
      >>> extract_build_info_from_filename(
      ...     'attachment; filename=CommCare_CommCare_2.13_32703_artifacts.zip'
      ... )
      ('2.13', 32703)
      >>> try:
      ...     extract_build_info_from_filename('foo')
      ... except ValueError as e:
      ...     print e
      Could not find filename like 'CommCare_CommCare_([\\\\d\\\\.]+)_(\\\\d+)_artifacts.zip' in 'foo'
  
      """
      pattern = r'CommCare_CommCare_([\d\.]+)_(\d+)_artifacts.zip'
      match = re.search(pattern, content_disposition)
      if match:
          version, number = match.groups()
          return version, int(number)
      else:
          raise ValueError('Could not find filename like {!r} in {!r}'.format(
              pattern, content_disposition))
  
new_contents: import re
  
  from .models import CommCareBuild, CommCareBuildConfig
  
  
  def get_all_versions(versions):
      """
      Returns a list of all versions found in the database,
      plus those in the optional list parameter.
      """
      db = CommCareBuild.get_db()
      results = db.view('builds/all', group_level=1).all()
      versions += [result['key'][0] for result in results]
      return sorted(list(set(versions)))
  
  
  def get_default_build_spec():
      return CommCareBuildConfig.fetch().get_default()
  
  
  def extract_build_info_from_filename(content_disposition):
      """
  
      >>> extract_build_info_from_filename(
      ...     'attachment; filename=CommCare_CommCare_2.13_32703_artifacts.zip'
      ... )
      ('2.13', 32703)
      >>> try:
      ...     extract_build_info_from_filename('foo')
      ... except ValueError as e:
      ...     print e
      Could not find filename like 'CommCare_CommCare_([\\\\d\\\\.]+)_(\\\\d+)_artifacts.zip' in 'foo'
  
      """
      pattern = r'CommCare_CommCare_([\d\.]+)_(\d+)_artifacts.zip'
      match = re.search(pattern, content_disposition)
      if match:
          version, number = match.groups()
          return version, int(number)
      else:
          raise ValueError('Could not find filename like {!r} in {!r}'.format(
              pattern, content_disposition))
  
subject: Remove optional arg that's now always used