says int object is not iterable

trying to create a list with the name and the number of classes it says int object not iterable. hmph i wonder why that error is there

anyway I found the solution

def stats(our_dict):
  list1 = []
  for i in our_dict:
    j = []
    j.append(i)
    j.append(len(our_dict[i]))   # create j a smaller list and then append that to list1
    list1.append(j)
  return list1

it works in my interpreter but treehouse error says: Looks like task 1 is no longer passing?

def courses(our_dict):
  one_list = []
  for i in our_dict:
    one_list = one_list + our_dict[i]       
  return one_list

Hey,

Well, first thing is first. Only a sequence or otherwise known as a container is iterable. An iterable is defined as having a dunder method iter as one if it's built in methods.

For example

>>> a = 5
>>> type(a)
<class 'int'>
>>> dir(a)
['__abs__', '__add__', '__and__', '__bool__', '__ceil__', '__class__', '__delattr__', '__dir__', '__divmod__', '__doc__', '__eq__', '__float__', '__floor__', '__floordiv__', '__format__', '__ge__', '__getattribute__', '__getnewargs__', '__gt__', '__hash__', '__index__', '__init__', '__int__', '__invert__', '__le__', '__lshift__', '__lt__', '__mod__', '__mul__', '__ne__', '__neg__', '__new__', '__or__', '__pos__', '__pow__', '__radd__', '__rand__', '__rdivmod__', '__reduce__', '__reduce_ex__', '__repr__', '__rfloordiv__', '__rlshift__', '__rmod__', '__rmul__', '__ror__', '__round__', '__rpow__', '__rrshift__', '__rshift__', '__rsub__', '__rtruediv__', '__rxor__', '__setattr__', '__sizeof__', '__str__', '__sub__', '__subclasshook__', '__truediv__', '__trunc__', '__xor__', 'bit_length', 'conjugate', 'denominator', 'from_bytes', 'imag', 'numerator', 'real', 'to_bytes']

I create a variable called "a" and I assign it the integer 5. If I do type(a) it will tell me the type of object 'a' is. It returns integer. Ok so do a dir(a) which lists out the built in methods for that type of object. You can see there is not iter method in that list. Which means that an integer is not iterable. Now, let's make a list.

>>> a = [1,2,3,4,5]
>>> type(a)
<class 'list'>
>>> dir(a)
['__add__', '__class__', '__contains__', '__delattr__', '__delitem__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__', '__gt__', '__hash__', '__iadd__', '__imul__', '__init__', '__iter__', '__le__', '__len__', '__lt__', '__mul__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__reversed__', '__rmul__', '__setattr__', '__setitem__', '__sizeof__', '__str__', '__subclasshook__', 'append', 'clear', 'copy', 'count', 'extend', 'index', 'insert', 'pop', 'remove', 'reverse', 'sort']
>>>

Now in the dir output, you can see iter. That means that a list is iterable. A list is a sequence and so is a string and dictionary.

Now I wont go into calling iter on an iterable to make an iterator and the use of next or next() depending on your python version. But the take home is... Integer is not a sequence but a single value. That means it's not iterable. To iterate over a single value offers no purpose.

Second part - Treehouse objectives test like this.

Test 1 - pass. Go to test two. Test 2 - tests for test 1 and 2 Test 3 - test for test 1, 2 and 3 test 4 - test for test 1, 2, 3 and 4

So if you are on say task 4. And it says task 1 is no longer passing. It's either because something you did messed up test 1 OR more likely, the code isn't compiling because there is an error and thus test one is failing.

I see in your last response it's courses - the method is not courses but "most_classes". That would fail step 1.

Hope this helps you out. You mentioned you found the answer so I wont go into that here.

no the i is the key in the dict and len is operates on the values to see how many their are.

the answer is to create a seperate variable for classes = len(our_dict[i]) and then .append(classes)

perhaps it is saying that appending the len during an iteration is not alright

dir(len) does not show iterable

dir(append) doesn't even show up at all!?