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07.16.2008 at 01:00PM PDT, ID: 23571081
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9.4

String concatenation problem

Asked by tmonteit in Python Scripting Language

Tags:

I'm a java guy doing my second Python 'hello world' application.    I'm doing this for GAE, but that probably isn't relevant to this problem.  

I'm trying to build an object and dump object information.  THe error I'm receiving is down annotated with the code.

1.  What's causing this error?  How should I be doing this?

2.  What's the proper (ideal) way to make an object dump information about itself.  I used to use toString() in java.Start Free Trial 
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-------------Error----------------
    handler.get(*groups)
  File "/cygdrive/e/decm/main.py", line 24, in get
    self.response.out.write('Foo 2 Generated: ' + s)
TypeError: cannot concatenate 'str' and 'instancemethod' objects
 
INFO     2008-07-16 18:44:05,272 __init__.py] "GET / HTTP/1.1" 500 -
--------------end Error---------------
 
------------model.py--------------
# Test class
class Foo(db.Model):
  fooText = db.StringProperty(required=True, default="I am Foo")
  fooData = db.StringProperty(required=False, default="I am Foo Data")
  barRef = db.Reference(Bar, required=False)
 
  def dump():
    s="Text: " + self.fooText
    s+=", Data: " + self.fooData
    return s
------------end------------------
 
------------main.py-------------
from model import Foo
 
class MainPage(webapp.RequestHandler):
  def get(self):
    foo1 = Foo(fooText="MainPage Foo")
    s=foo1.dump
    self.response.out.write('Foo 2 Generated: ' + s)
 
def main():
  application = webapp.WSGIApplication([('/', MainPage)], debug=True)
  wsgiref.handlers.CGIHandler().run(application)
 
 
if __name__ == '__main__':
    main()
------------end------------------
[+][-]07.16.2008 at 01:33PM PDT, ID: 22019858

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About this solution

Zone: Python Scripting Language
Tags: Python
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Solution Provided By: RichieHindle
Participating Experts: 1
Solution Grade: A
 
 
 
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