def assert_bool(dist, attr, value):
 if (bool(value) != value):
  raise DistutilsSetupError(('%r must be a boolean value (got %r)' % (attr, value)))

def assert_bool ( dist , attr , value ) : if ( bool ( value ) != value ) : raise DistutilsSetupError ( ( '%r must be a boolean value (got %r)' % ( attr , value ) ) )
verify that value is true .