Manipulating columns in a table

Some time back, when I was still getting familiar with qsql, I went for an interview at an investment bank. I was interviewed by 4 different people for a total of 2 hours. 3 of the interviewers asked theoretical architecture related questions but the last one was all about writing code. The last interviewer gave …

Introducing data analysis with Python and Pandas

Recently, I have been playing around with Python and its data analysis library – Pandas, which is built on another library called NumPy. Most of you have probably heard of Python (if not then I don’t know what’s wrong with you. Get out there and make some programmer friends or read some blogs). Python has …