>>> import httplib
>>> dir(httplib)
['ACCEPTED', 'BAD_GATEWAY', 'BAD_REQUEST', 'BadStatusLine', 'CONFLICT', 'CONTINUE', 'CREATED', 'CannotSendHeader', 'CannotSendRequest', 'EXPECTATION_FAILED', 'FAILED_DEPENDENCY', 'FORBIDDEN', 'FOUND', 'GATEWAY_TIMEOUT', 'GONE', 'HTTP', 'HTTPConnection', 'HTTPException', 'HTTPMessage', 'HTTPResponse', 'HTTPS_PORT', 'HTTP_PORT', 'HTTP_VERSION_NOT_SUPPORTED', 'IM_USED', 'INSUFFICIENT_STORAGE', 'INTERNAL_SERVER_ERROR', 'ImproperConnectionState', 'IncompleteRead', 'InvalidURL', 'LENGTH_REQUIRED', 'LOCKED', 'LineAndFileWrapper', 'MAXAMOUNT', 'METHOD_NOT_ALLOWED', 'MOVED_PERMANENTLY', 'MULTIPLE_CHOICES', 'MULTI_STATUS', 'NON_AUTHORITATIVE_INFORMATION', 'NOT_ACCEPTABLE', 'NOT_EXTENDED', 'NOT_FOUND', 'NOT_IMPLEMENTED', 'NOT_MODIFIED', 'NO_CONTENT', 'NotConnected', 'OK', 'PARTIAL_CONTENT', 'PAYMENT_REQUIRED', 'PRECONDITION_FAILED', 'PROCESSING', 'PROXY_AUTHENTICATION_REQUIRED', 'REQUESTED_RANGE_NOT_SATISFIABLE', 'REQUEST_ENTITY_TOO_LARGE', 'REQUEST_TIMEOUT', 'REQUEST_URI_TOO_LONG', 'RESET_CONTENT', 'ResponseNotReady', 'SEE_OTHER', 'SERVICE_UNAVAILABLE', 'SWITCHING_PROTOCOLS', 'StringIO', 'TEMPORARY_REDIRECT', 'UNAUTHORIZED', 'UNPROCESSABLE_ENTITY', 'UNSUPPORTED_MEDIA_TYPE', 'UPGRADE_REQUIRED', 'USE_PROXY', 'UnimplementedFileMode', 'UnknownProtocol', 'UnknownTransferEncoding', '_CS_IDLE', '_CS_REQ_SENT', '_CS_REQ_STARTED', '_UNKNOWN', '__all__', '__builtins__', '__doc__', '__file__', '__name__', '__package__', 'array', 'error', 'mimetools', 'py3kwarning', 'responses', 'socket', 'test', 'urlsplit', 'warnings']