[pysqlite] [APSW 3.6.10-r1] Displaying query before update?

Hello

I didn't find how to search the mailing list archives, so can't check 
in which thread this question was answered before :-/

I'd like to use the safe way to insert/update records:

=======
sql = 'BEGIN;'
sql = sql + 'UPDATE companies SET name=?,address=?,zip=? WHERE id=?;'
sql = sql + "COMMIT"
try:
	#How to only display the query, not run it directly?
	cursor.execute(sql, (name,address,zip,id) )
except:
	print "Failed UPDATING"
	raise
=======

But before actually calling cursor.execute, I'd like to only display 
what the query will look like. How should I do this?

Thank you.