doctest quiet again before exit how

[p.lavarre at ieee.org]

Looks like every run of doctest after the first is verbose:

$ python2.5 quiet-once.py
(0, 0)
*** DocTestRunner.merge: '__main__' in both testers; summing outcomes.
(0, 0)
*** DocTestRunner.merge: '__main__' in both testers; summing outcomes.
(0, 0)
$
$ cat quiet-once.py
import doctest
print doctest.testmod()
print doctest.testmod()
print doctest.testmod()
$

How do I ask for another quiet run, before exiting the process?

Adding the arg verbose=False to the testmod call doesn't work.