How to merge elements in list in python with condition?

Question

I am having a hard time to find a solution to merge two different type of element within the list.

list_i = ['teacher', '10', 'student', '100', 'principle', '2']

Result:

list_1 = ['teacher:10', 'student:100', 'principle:2']

Any help is greatly appreciated!!

Answer 1

This will work:

[list_i[i] + ":" + list_i[i+1] for i in range(0, len(list_i), 2)]

This produces:

['teacher:10', 'student:100', 'principle:2']