Add 'requests' library to third_party.

third_party/requests/packages/urllib3/__init__.py

+# urllib3/__init__.py
+# Copyright 2008-2013 Andrey Petrov and contributors (see CONTRIBUTORS.txt)
+#
+# This module is part of urllib3 and is released under
+# the MIT License: http://www.opensource.org/licenses/mit-license.php
+
+"""
+urllib3 - Thread-safe connection pooling and re-using.
+"""
+
+__author__ = 'Andrey Petrov (andrey.petrov@shazow.net)'
+__license__ = 'MIT'
+__version__ = 'dev'
+
+
+from .connectionpool import (
+    HTTPConnectionPool,
+    HTTPSConnectionPool,
+    connection_from_url
+)
+
+from . import exceptions
+from .filepost import encode_multipart_formdata
+from .poolmanager import PoolManager, ProxyManager, proxy_from_url
+from .response import HTTPResponse
+from .util import make_headers, get_host
+
+
+# Set default logging handler to avoid "No handler found" warnings.
+import logging
+try:  # Python 2.7+
+    from logging import NullHandler
+except ImportError:
+    class NullHandler(logging.Handler):
+        def emit(self, record):
+            pass
+
+logging.getLogger(__name__).addHandler(NullHandler())
+
+def add_stderr_logger(level=logging.DEBUG):
+    """
+    Helper for quickly adding a StreamHandler to the logger. Useful for
+    debugging.
+
+    Returns the handler after adding it.
+    """
+    # This method needs to be in this __init__.py to get the __name__ correct
+    # even if urllib3 is vendored within another package.
+    logger = logging.getLogger(__name__)
+    handler = logging.StreamHandler()
+    handler.setFormatter(logging.Formatter('%(asctime)s %(levelname)s %(message)s'))
+    logger.addHandler(handler)
+    logger.setLevel(level)
+    logger.debug('Added an stderr logging handler to logger: %s' % __name__)
+    return handler
+
+# ... Clean up.
+del NullHandler