Question

go through a dictionary picking keys from it in a loop?

For example lets say I have the following dictionary: {'hello':'world', 'hi':'there'}. Is there a way to for loop through the dictionary and print hello, hi?

on a similar note is there a way to say myDictionary.key[1] and that will return hi?

Answer 1

You can iterate over the keys of a dict with a for loop:

>>> for key in yourdict:
>>>    print(key)
hi
hello

If you want them as a comma separated string you can use ', '.join.

>>> print(', '.join(yourdict))
hi, hello

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on a similar note is there a way to say myDictionary.key1 and that will return hi

No. The keys in a dictionary are not in any particular order. The order that you see when you iterate over them may not be the same as the order you inserted them into the dictionary, and also the order could in theory change when you add or remove items.

if you need an ordered collection you might want to consider using another type such as a list, or an OrderedDict