Question

I have part of a Python function that looks like:

for item in passedList:
    tempDict = {}
    tempDict ["first"] = item[0]
    tempDict ["second"] = item[1]
    tempDict ["third"] = item[2]

What I’m expecting back is:

{'first': 'item1', 'second': 'item2', 'third': 'item3'}

However, I get:

{'second': 'item2', 'first': 'item1', 'third': 'item3'}

It is probably a pretty simple oversight, but any thoughts on why this is happening?

Answer 1

This is because the implementation of dict in Python is a hashmap or hash table, which doesn’t store the elements in order.

You could use OrderedDict to get around this.