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Python Python Collections (Retired) Dictionaries Dictionary Iteration

igsm '
igsm '
10,440 Points
Posted by igsm '
igsm '
10,440 Points

Function returns only 1st item of dictionary. How to iterate through all keys and values in function?

Hey Kenneth Love

I play with functions and dictionaries and faced a problem. I want to print in the string all the content of dictionary but it seems like it outputs only first item of the dictionary.

def f():
    fixtures = {'Item1': ('a', 'b', ('', '')),
                'Item2': ('c', 'd', ('', ''))}
    for keys, values in fixtures.iteritems():
        return '{} - {} and {}    {} - {}'.format(
        keys, values[0], values[1],values[2][0], values[2][1])

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,441 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points

Running in ipython, I noticed two errors. (I added extra data for testing):

  • 'dict' object has no attribute 'iteritems'. Change to items()
  • return stops the loop on the first interation. Replace with print() 
In [8]: def f():
        fixtures = {'Item1': ('a', 'b', ('x', 'y')),
                    'Item2': ('c', 'd', ('v', 'w'))}
        for keys, values in fixtures.items():
                print('{} - {} and {}    {} - {}'.format(
                keys, values[0], values[1],values[2][0], values[2][1]))
   ...:         

In [9]: f()
Item2 - c and d    v - w
Item1 - a and b    x - y