Newbie Q: modifying SQL statements

[Faber J. Fedor]

Hi all,

I'm in the process of learning Python by writing a job queue program.
Nothing fancy, mind you, just read from a table, shell out to a program,
write back to the table.

I'm working off of the tutorial listed here (amongst many places):
http://www.devx.com/dbzone/Article/22093

In my Jobs class I have:

def __iter__(self):
   "creates a data set, and returns an iterator (self)"
   q = "select * from %s" % (self.name)
   self._query(q)
   return self  # an Iterator is an object 
   # with a next() method

def next(self):
   "returns the next item in the data set, 
      or tells Python to stop"
   r = self.dbc.fetchone()
   if not r:
      raise StopIteration
   return r

which works well, but what if I want to modify the __iter__ query?  I
want to be able to do something like this (and I know this is not the
right syntax but you'll get my drift):


for job in jobs: print job # which the above code does
for job in jobs("status = running"): print job
for job in jobs("jobid = 4"): print job

What's the pythonic way of doing this?



-- 
 
Regards,
 
Faber

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