Python Dictionary to CSV

Question

I have written code to read a CSV into a python dictionary, which works fine. I\'m trying to get the dictionary back to a CSV. I have written the following:

Answer 1

d = [{'a': 1, 'b': 2},{'a': 3, 'b': 4}]

with open('csv_file.csv', 'w', newline='\n') as f:
    w = csv.DictWriter(f, d[0].keys())
    w.writeheader()
    for i in d:
        w.writerow(i)

gets you

a,b
1,2
3,4