Python - csv file is empty after using csv writer

Question

Python newbie here. I was trying to troubleshoot an issue with writing a csv file in a larger program and decided to go back to basics to try to find the problem.

I

Answer 1

I tried this out in the python interpreter. In the first bit of code, I see content in the csv only after I exit python (when the file is closed). Definitely, this was something to with closing the file.