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Python Python Collections (Retired) Tuples Combo

Posted by George Zabel
George Zabel
5,194 Points

No clue how to program with tuples

Where do I start with the combo problem? I don't know how to take the combo input and split it into the parts I need for output.

zippy.py 
# combo(['swallow', 'snake', 'parrot'], 'abc')
# Output:
# [('swallow', 'a'), ('snake', 'b'), ('parrot', 'c')]
# If you use list.append(), you'll want to pass it a tuple of new values.
# Using enumerate() here can save you a variable or two.
akak
akak
29,445 Points
akak
akak
29,445 Points

You need a function that accepts two input parameters, an empty list to put the result into, and a for loop to loop through input parameters and add them to the empty list. I can share how I solved if you're really stuck. The good idea is to make a for loop and print key and value to see what's inside and how you could work with it.

1 Answer

Martin Cornejo Saavedra
Martin Cornejo Saavedra
18,132 Points
Martin Cornejo Saavedra
Martin Cornejo Saavedra
18,132 Points

I got two solutions, the common one and the cool one:

#Common solution
def combo(iter_1, iter_2):
    iter_output = [];
    for idx, value in enumerate(iter_1):   #iter_2 will work too
        iter_output.append((iter_1[idx], iter_2[idx]))   #appending a tuple

    return iter_output

#--------------------
#Cool solution
def combo(iter_1, iter_2):
    return list(zip(iter_1, iter_2))

zip() is a built-in function from python that accepts two iterables of the same length and joins them on a zip object. If you use list() on a zip object you obtain the goal required in this challenge.