I understand that pandas is designed to load fully populated
DataFrame but I need to create an empty DataFrame then add rows, one by one.
What is the best way to do this ?
I successfully created an empty DataFrame with :
res = DataFrame(columns=('lib', 'qty1', 'qty2'))
Then I can add a new row and fill a field with :
res = res.set_value(len(res), 'qty1', 10.0)
It works but seems very odd :-/ (it fails for adding string value)
How can I add a new row to my DataFrame (with different columns type) ?