Added a stream class for use with the logging module.

License assent:
    https://github.com/zulip/python-zulip/pull/3#issuecomment-18182458

(imported from commit 9faf9dd147032b1e56b113bc0f0d729a653e1e49)

README.md

@@ -67,6 +67,23 @@ keys: msg, result.  For successful calls, result will be "success" and
 msg will be the empty string.  On error, result will be "error" and
 msg will describe what went wrong.
 
+#### Logging
+The Zulip API comes with a ZulipStream class which can be used with the
+logging module:
+
+```
+import zulip
+import logging
+stream = zulip.ZulipStream(type="stream", to=["support"], subject="your subject")
+logger = logging.getLogger("your_logger")
+logger.addHandler(logging.StreamHandler(stream))
+logger.setLevel(logging.DEBUG)
+logger.info("This is an INFO test.")
+logger.debug("This is a DEBUG test.")
+logger.warn("This is a WARN test.")
+logger.error("This is a ERROR test.")
+```
+
 #### Sending messages
 
 You can use the included `zulip-send` script to send messages via the

zulip/__init__.py

@@ -31,6 +31,7 @@ import optparse
 from distutils.version import LooseVersion
 
 from ConfigParser import SafeConfigParser
+import logging
 
 
 __version__ = "0.2.1"
@@ -293,6 +294,27 @@ def _mk_events(event_types=None):
 def _kwargs_to_dict(**kwargs):
     return kwargs
 
+class ZulipStream(object):
+    """
+    A Zulip stream-like object
+    """
+
+    def __init__(self, type, to, subject, **kwargs):
+        self.client = Client(**kwargs)
+        self.type = type
+        self.to = to
+        self.subject = subject
+
+    def write(self, content):
+        message = {"type": self.type,
+                   "to": self.to,
+                   "subject": self.subject,
+                   "content": content}
+        self.client.send_message(message)
+
+    def flush(self):
+        pass
+
 Client._register('send_message', url='messages', make_request=(lambda request: request))
 Client._register('update_message', method='PATCH', url='messages', make_request=(lambda request: request))
 Client._register('get_messages', method='GET', url='messages/latest', longpolling=True)