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'm not too familiar with the csv module, but this does look like a file IO problem more than a csv problem.

The reason that you see nothing in the file is that python still has the file open. You need to close it.

So rather than doing this:

spamWriter = csv.writer(open('eggs.csv', 'w'), delimiter=' ', quotechar='|')

Do this instead:

f = open('eggs.csv', 'w')
spamWriter = csv.writer(f, delimiter=' ', quotechar='|')
# the rest of your code
f.close()

Now you should see what you want in eggs.csv

Hope this helps