[FIXED] One-liner for if in python - why is the result always the last item in the list?

Issue

I have a list (colNames) and I am trying to read each key in the dictionary and iterate thru the list to find the corresponding index wherein the key matches the item in the list

colNames = ['First_Name', 'Last_Name', 'ClientID', 'Location']

dict = {'First_Name':'Charlie', 'Last_Name':'Brown', 'ClientID':'23156', 'Location':'H3M 2V4'}

for key, value in dict.iteritems():  

     [item for item in colNames if key==item]

     col = colNames.index(item)

     print item

The result is always 'Location' irrespective of the key

Why is that? I assumed it would iterate thru the list and once it finds a match with the key note the item and using colNames.index(item) i could get the index.

Solution

This should do what you want:

colNames = ['First_Name', 'Last_Name', 'ClientID', 'Location']

_dict = {'First_Name':'Charlie', 'Last_Name':'Brown', 'ClientID':'23156', 'Location':'H3M 2V4'}

for key in _dict:
    print(colNames.index(key))

Answered By - Zain Patel