pysqlite - simple problem

[rdrink]

I am just getting into pysqlite (with a fair amount of Python and MySQL
experience behind me) and have coded a simple test case to try to get
the hang of things...
yet have run into a 'stock simple' problem...

I can create a database 'test.db', add a table 'foo' (which BTW I
repeatedly DROP on each run) with one INTGER column 'id', and can
insert data into with:
cur.execute("INSERT INTO foo (id) VALUES (200)")
con.commit()
(and fetch back out)
all with no problem. But...

If I try to expand this to:
num = 200
cur.execute("INSERT INTO foo (id) VALUES (?)", num)
I get the error...
Traceback (most recent call last):
  File "/home/rdrink/Programming/Python/Inner_Square/sqlite_test.py",
line 46, in ?
    cur.execute("INSERT INTO foo (id) VALUES (?)", num)
  File "/usr/lib/python2.4/site-packages/sqlite/main.py", line 255, in
execute
    self.rs = self.con.db.execute(SQL % parms)
TypeError: not all arguments converted during string formatting
... which obviously points to a 'typing' problem.
?? but where ??
>From all the docs I have read Python 'int' and sqlite INTEGER should
pass back and forth seemlessly...
And I have even tried to reduce things to simply:
cur.execute("INSERT INTO foo (id) VALUES (?)", 200)
but still raise the same error.

So this has to be something stupidly simple... but for the life of me I
can't see it.

Advice, suggestions, pointers for the noob?

rd