python object() takes no parameters error


I can't believe this is actually a problem, but I've been trying to debug this error and I've gotten nowhere. I'm sure I'm missing something really simple because this seems so silly.

import Experiences, Places, Countries
class Experience(object):

    def make_place(self, place):
        addr = place["address"]
        addr = Places.ttypes.Address(addr["street"], addr["city"], addr["state"], Countries.ttypes._NAMES_TO_VALUES[addr["country"]], addr["zipcode"])
        ll = Geocoder.geocode(addr["street"]+", "+addr["city"]+", "+addr["state"]+" "+addr["zipcode"])
        place["location"] = Places.ttypes.Location(ll[0].coordinates[0], ll[0].coordinates[1])

    def __init__(self, exp_dict):
        exp_dict["datetimeInterval"] = Experiences.ttypes.DateTimeInterval(remove(exp_dict, "startTime"), remove(exp_dict, "endTime"))
        exp_dict["type"] = Experiences.ttypes.ExperienceType.OPEN
        exp_dict["place"] = self.make_place(exp_dict["place"])
        self.obj = Experiences.ttypes.Experience(**exp_dict)

def addExperience(thrift, access_token, exp_dict):
    experience = Experience(exp_dict)
    return thrift.client.addExperience(thrift.CLIENT_KEY, access_token, experience.obj)

(The two decorators corresponding to addExperience are because this is defined outside of the file where its class is declared.)

The error I'm getting is:

experience = Experience(exp_dict)
TypeError: object() takes no parameters

So this doesn't make any sense to me because I'm clearly declaring a second argument to the init function. Any help would be awesome!

Traceback (most recent call last):
  File "/Users/phil/Hangify/hy-frontend-server/env/lib/python2.7/site-packages/flask/", line 1836, in __call__
    return self.wsgi_app(environ, start_response)
  File "/Users/phil/Hangify/hy-frontend-server/env/lib/python2.7/site-packages/flask/", line 1820, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "/Users/phil/Hangify/hy-frontend-server/env/lib/python2.7/site-packages/flask/", line 1403, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/Users/phil/Hangify/hy-frontend-server/env/lib/python2.7/site-packages/flask/", line 1817, in wsgi_app
    response = self.full_dispatch_request()
  File "/Users/phil/Hangify/hy-frontend-server/env/lib/python2.7/site-packages/flask/", line 1477, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/Users/phil/Hangify/hy-frontend-server/env/lib/python2.7/site-packages/flask/", line 1381, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/Users/phil/Hangify/hy-frontend-server/env/lib/python2.7/site-packages/flask/", line 1475, in full_dispatch_request
    rv = self.dispatch_request()
  File "/Users/phil/Hangify/hy-frontend-server/env/lib/python2.7/site-    packages/flask/", line 1461, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/Users/phil/Hangify/hy-frontend-server/hangify/", line 22, in check_login
    return f()
  File "/Users/phil/Hangify/hy-frontend-server/hangify/handlers/", line 31, in Handle
    res = exp.addExperience(hangify.thrift_interface, access_token, experience)
  File "/Users/phil/Hangify/hy-frontend-server/hangify/client/", line 22, in decorator
    obj = func(client, *args, **kwargs)
  File "/Users/phil/Hangify/hy-frontend-server/hangify/client/", line 30, in decorator
    return func(*args, **kwargs)
  File "/Users/phil/Hangify/hy-frontend-server/hangify/client/", line 39, in addExperience
    experience = Experience(exp_dict)
TypeError: object() takes no parameters

Here is Experience.mro() - which says the correct module-wise location of the class Experience:

[<class 'hangify.client.exp.Experience'>, <type 'object'>]

And here is dir(Experience):

 ['__class__', '__delattr__', '__dict__', '__doc__', '__format__',
 '__getattribute__', '__hash__', '__init__', '__module__', '__new__',
 '__reduce__', '__reduce_ex__', '__repr__', '__setattr__',
 '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'make_place']

This question is tagged with python

~ Asked on 2014-04-19 23:07:04

The Best Answer is


You've mixed tabs and spaces. __init__ is actually defined nested inside another method, so your class doesn't have its own __init__ method, and it inherits object.__init__ instead. Open your code in Notepad instead of whatever editor you're using, and you'll see your code as Python's tab-handling rules see it.

This is why you should never mix tabs and spaces. Stick to one or the other. Spaces are recommended.

~ Answered on 2014-04-20 13:29:56


I struggled for a while about this. Stupid rule for __init__. It is two "_" together to be "__"

~ Answered on 2016-03-02 21:46:51

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