Question

Please use Python 3, thank you~

Write a program that:

• Defines a function called find_item_in_grid, as described below.
• Calls the function find_item_in_grid and prints the result.

The find_item_in_grid function should have one parameter, which it should assume is a list of lists (a 2D list). The function should ask the user for a row number and a column number. It should return (not print) the item in the 2D list at the row and column specified by the user. The row number specifies which inner list you should look at, and the column number specifies which index in that inner list you should look at. (So if the grid is [[1, 2, 3], [4, 5, 6], [7, 8, 9]] and the user enters 1 as the row and 2 as the column, your function should return 6.)

If the user enters a row number or a column number that is out of range, your program should return None. You can do this by just saying:

        return None

Your function call (after the function definition) should pass the following grid to the function:

[[1, 2, 3], [4, 5, 6], [7, 8, 9]]

It should print whatever your find_item_in_gridfunction returns.

Answer 1

def find_item_in_grid(a):
   rowNo = int(input("Enter a row number: "))
   colNo = int(input("Enter a column number: "))
   #print(len(a))
   if rowNo in range(0,3) and colNo in range(0,3):
       return a[rowNo][colNo]
   else:
       return None

a = [[1,2,3],[4,5,6],[7,8,9]]
gridValue = find_item_in_grid(a)
print(gridValue)