text: 
  
  import logging
  import sys
  import textwrap
  from collections import OrderedDict
  
  from pip._vendor import pkg_resources
  from pip._vendor.packaging.version import parse as parse_version
  # NOTE: XMLRPC Client is not annotated in typeshed as on 2017-07-17, which is
  #       why we ignore the type on this import
  from pip._vendor.six.moves import xmlrpc_client  # type: ignore
  
  from pip._internal.cli.base_command import Command
  from pip._internal.cli.status_codes import NO_MATCHES_FOUND, SUCCESS
  from pip._internal.download import PipXmlrpcTransport
  from pip._internal.exceptions import CommandError
  from pip._internal.models.index import PyPI
  from pip._internal.utils.compat import get_terminal_size
  from pip._internal.utils.logging import indent_log
  
  logger = logging.getLogger(__name__)
  
  
  class SearchCommand(Command):
      """Search for PyPI packages whose name or summary contains <query>."""
      name = 'search'
      usage = """
        %prog [options] <query>"""
      summary = 'Search PyPI for packages.'
      ignore_require_venv = True
  
      def __init__(self, *args, **kw):
          super(SearchCommand, self).__init__(*args, **kw)
          self.cmd_opts.add_option(
              '-i', '--index',
              dest='index',
              metavar='URL',
              default=PyPI.pypi_url,
              help='Base URL of Python Package Index (default %default)')
  
          self.parser.insert_option_group(0, self.cmd_opts)
  
      def run(self, options, args):
          if not args:
              raise CommandError('Missing required argument (search query).')
          query = args
          pypi_hits = self.search(query, options)
          hits = transform_hits(pypi_hits)
  
          terminal_width = None
          if sys.stdout.isatty():
              terminal_width = get_terminal_size()[0]
  
          print_results(hits, terminal_width=terminal_width)
          if pypi_hits:
              return SUCCESS
          return NO_MATCHES_FOUND
  
      def search(self, query, options):
          index_url = options.index
          with self._build_session(options) as session:
              transport = PipXmlrpcTransport(index_url, session)
              pypi = xmlrpc_client.ServerProxy(index_url, transport)
              hits = pypi.search({'name': query, 'summary': query}, 'or')
              return hits
  
  
  def transform_hits(hits):
      """
      The list from pypi is really a list of versions. We want a list of
      packages with the list of versions stored inline. This converts the
      list from pypi into one we can use.
      """
      packages = OrderedDict()
      for hit in hits:
          name = hit['name']
          summary = hit['summary']
          version = hit['version']
  
          if name not in list(packages.keys()):
              packages[name] = {
                  'name': name,
                  'summary': summary,
                  'versions': [version],
              }
          else:
              packages[name]['versions'].append(version)
  
              # if this is the highest version, replace summary and score
              if version == highest_version(packages[name]['versions']):
                  packages[name]['summary'] = summary
  
      return list(packages.values())
  
  
  def print_results(hits, name_column_width=None, terminal_width=None):
      if not hits:
          return
      if name_column_width is None:
          name_column_width = max([
              len(hit['name']) + len(highest_version(hit.get('versions', ['-'])))
              for hit in hits
          ]) + 4
  
      installed_packages = [p.project_name for p in pkg_resources.working_set]
      for hit in hits:
          name = hit['name']
          summary = hit['summary'] or ''
          latest = highest_version(hit.get('versions', ['-']))
          if terminal_width is not None:
              target_width = terminal_width - name_column_width - 5
              if target_width > 10:
                  # wrap and indent summary to fit terminal
                  summary = textwrap.wrap(summary, target_width)
                  summary = ('\n' + ' ' * (name_column_width + 3)).join(summary)
  
          line = '%-*s - %s' % (name_column_width,
                                '%s (%s)' % (name, latest), summary)
          try:
              logger.info(line)
              if name in installed_packages:
                  dist = pkg_resources.get_distribution(name)
                  with indent_log():
                      if dist.version == latest:
                          logger.info('INSTALLED: %s (latest)', dist.version)
                      else:
                          logger.info('INSTALLED: %s', dist.version)
                          if parse_version(latest).pre:
                              logger.info('LATEST:    %s (pre-release; install'
                                          ' with "pip install --pre")', latest)
                          else:
                              logger.info('LATEST:    %s', latest)
          except UnicodeEncodeError:
              pass
  
  
  def highest_version(versions):
      return max(versions, key=parse_version)
  