def add_prefix(self, field_name):
        return self.prefix and ('%s-%s' % (self.prefix, field_name)) or field_name
Outputfile default value is sys.stdout
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-0.96/django/newforms/forms.py/BaseForm.add_prefix--crossover with--dataset/ETHPy150Open jcbagneris/fms/tests/markets.py/MarketTests.test_output_file_default_value