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Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today. # I'm trying to create a list from tuples. I put together the code and tested offline but it wont work here

I have the following lists: list1 = [1, 2, 3] list2 = ["a", "b", "c"]

I added the lists together with the following function:

# Define function combo which returns tuple

def combo(list1, list2): # Create tuple of each list tuple1 = (list1, list2)

```# Create tuple of each element in lists
tuple2 = zip(list1,list2)
return tuple2
```

tuple2 offline gives the following: [(1, 'a'), (2, 'b'), (3, 'c')]

What am I doing wrong?

zippy.py
```# combo([1, 2, 3], 'abc')
# Output:
# [(1, 'a'), (2, 'b'), (3, 'c')]
# If you use .append(), you'll want to pass it a tuple of new values.
# Define two iterables to pass to function combo
list1 = [1, 2, 3]
list2 = ["a", "b", "c"]

# Define function combo which returns tuple
def combo(list1, list2):
# Create tuple of each list
tuple1 = (list1, list2)

# Create tuple of each element in lists
tuple2 = zip(list1,list2)
return tuple2

# Access functions to get outputs
tuple2 = combo(list1, list2)
``` Hi Rocco - The zip() function returns an iterator of tuples. To create a list of tuples just pass what zip() returns to list():

```# combo([1, 2, 3], 'abc')
# Output:
# [(1, 'a'), (2, 'b'), (3, 'c')]
# If you use .append(), you'll want to pass it a tuple of new values.
def combo(list1, list2):
return list(zip(list1, list2))
```

You can also do this without the zip function with a loop:

```# combo([1, 2, 3], 'abc')
# Output:
# [(1, 'a'), (2, 'b'), (3, 'c')]
# If you use .append(), you'll want to pass it a tuple of new values.
def combo(list1, list2):
my_tuples_list = []
for index in range(len(list1)):
my_tuples_list.append((list1[index], list2[index]))
return my_tuples_list
```

Thank you Kourosh!

What is the difference between an iterable & list? I thought a list was a sub category of iterable.

In addition, if I make the change you suggested, the challenge is happy, but in IDLE, I see no difference in output from what I had without adding list().

Is there something I'm missing?