How to set and check a boolean flag in python

I'm trying to do something like this with a boolean:

/* ... other stuff */
loggedDocument = false
for line in inFile:
  if (line.find( /*something*/ ) != -1):
    println("FOUND DOCUMENT: %s" % line)
    loggedDocument = true
  if (loggedDocument == false):
    /* do something else */

But I keep getting invalid syntax errors. I googled but couldn't find a simple boolean example, any ideas?