print two dimensional list

Question

I have a list, in which is another list and I want to doc.write(a)

a = [[1, 2, \"hello\"],
     [3, 5, \"hi There\"],
     [5,7,\"I don\'t know\"]]
         


        

Answer 1

List comprehension would be the best choice:

>>> ''.join([str(item) for sublist in a for item in sublist])
"12hello35hi There57I don't know"

It's the most recommended approach in a similar SO question, considering performance and syntax.