def invert_dict(dict): | |
rv = {} | |
for key, values in dict.iteritems(): | |
for value in values: | |
if value in rv: | |
raise ValueError | |
rv[value] = key | |
return rv | |
class HTTPException(Exception): | |
def __init__(self, code, message=""): | |
self.code = code | |
self.message = message |