TypError beim Konvertieren von Wörterbuch in das JSON-Array

Wie nehme ich ein PythonWörterbuch, wo die Tasten und Werte sind Strings und wandeln es in eine JSON String.

Das habe ich jetzt:

import json def create_simple_meeting(subject, startDate, endDate, location, body): info = dict() if(subject != ""): info["subject"] = subject if(startDate != ""): info["startDate"] = startDate if(endDate != ""): info["endDate"] = endDate if(body != ""): info["body"] = body if(location != ""): info["location"] = location print(json.dumps(dict)) create_simple_meeting("This is the subject of our meeting.","2014-05-29 11:00:00","2014-05-29 12:00:00", "Boca Raton", "We should definitely meet up, man") 

Und es gibt mir diesen Fehler

  File "/Users/bens/Documents/workspace/Copy of ws1 for py java playing/opias/robot/libs/playing.py", line 15, in create_simple_meeting print(json.dumps(dict)) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/__init__.py", line 243, in dumps return _default_encoder.encode(obj) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/encoder.py", line 207, in encode chunks = self.iterencode(o, _one_shot=True) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/encoder.py", line 270, in iterencode return _iterencode(o, 0) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/encoder.py", line 184, in default raise TypeError(repr(o) + " is not JSON serializable") TypeError: <type 'dict'> is not JSON serializable 

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