How do I merge a 2D array in Python into one string with List Comprehension?

Question

List Comprehension for me seems to be like the opaque block of granite that regular expressions are for me. I need pointers.

Say, I have a 2D list:

l         


        

Answer 1

To make it a flattened list use either:

1. http://code.activestate.com/recipes/121294/
2. http://code.activestate.com/recipes/363051/

Then, join to make it a string.