world.response_format = fmt
elif fmt in ('json', 'jsonv2'):
if 'json_callback' in world.params:
- world.json_callback = world.params['json_callback']
+ world.json_callback = world.params['json_callback'].encode('utf8')
assert world.page.startswith(world.json_callback + '(')
assert world.page.endswith(')')
world.page = world.page[(len(world.json_callback)+1):-1]