1. Write a set of nested loops that display 10 rows of # characters. There should be15 # characters in each row. 2. Write code that opens an output file with the filename number_list.txt, but does not erase the file's contents if it already exists 3. Write code that does the following: opens an output file with the filename number_list.txt, uses a loop to write the numbers 1 through 100 to the file, and then closes the file