def testString():
 tests = [('%s <%s>' % (name, func.__doc__)) for (name, func) in testDict().iteritems()]
 return ('valid tests: %s' % ', '.join(tests))

def testString ( ) : tests = [ ( '%s <%s>' % ( name , func . __doc__ ) ) for ( name , func ) in testDict ( ) . iteritems ( ) ] return ( 'valid tests: %s' % ', ' . join ( tests ) )
return string listing valid tests .