PgBoolean

Can anyone tell me how to programatically check the value of a PgBoolean object? I am doing the following:

#####
from pyPgSQL import PgSQL
from pyPgSQL import libpq

db = PgSQL.connect("localhost::testdb")
cursor = db.cursor()
cursor.callproc("sp_TestBoolean", 1, 1)
retval = cursor.fetchone()
#####

When I print the value of retval, I get this:
[<PgBoolean instance at 0x401c8900: Value: False>]

I would like to be able to do something like this:

if retval == true:
   # do something
else:
   # do something else

Thanks in advance for your help.




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