[OpenLayers-Users] Problems setting up TileCache

[Follower/OL]

While the TypeError error may well be solved by changing to a later 
Python version, I feel the need to point out a bug in the code:

Christopher Schmidt wrote:
 >Ben Wrote:
>>"/home/httpd/cf2/cgi-bin/tilecache-1.1/TileCache/Service.py", line 232, 
>>in _loadFromSection
>>[Wed Nov 22 08:48:23 2006] [error] [client 192.168.50.1]     if opt not 
>>in ("type"):
>>[Wed Nov 22 08:48:23 2006] [error] [client 192.168.50.1] TypeError: 'in 
>><string>' requires character as left operand
> 
> However, it does explain why you got this message: Python2.2 doesn't
> support the construct:
> 'string' in ("type")
> 
> A single element tuple is converted immediately to a string. (Python2.3
> and python 2.4 apparently don't do this.)
Please note that this:

    ("foo")

is *not* a single element tuple. See:

     Python 2.3.5 (#1, Mar 20 2005, 20:38:20)

     >>> type(("foo"))
     <type 'str'>

But this is:

     >>> type(("foo",))
     <type 'tuple'>

(Note the trailing comma.)

That the construct doesn't throw a TypeError in 2.3+ doesn't mean it's 
working correctly. Essentially, if the content of `opt` is a string then 
  it will never be true that 'opt' (a string) can be found in ("type") 
(a sequence of single characters).

Hope this is some use... :-)

--Phil.