Write a Python program that prints a square of size depending on an entered value.

The program first reads the size of the square and then prints the square with a pattern

according to the examples below. The figure shows two different executions of the

program.

Enter size of pattern: $3$

$***$

$**$#

$*$##

Enter size of pattern: $9$

$*********$

$********$#

$*******$##

$******$###

$*****$####

$****$#####

$***$######

$**$#######

$*$########

Enter size of pattern: a

Size of pattern must be an integer, try again

Enter size of pattern: $-1$

Size of pattern can't be less than or equal to $0,$ try again

Enter size of pattern:

You should use a pair of nested for$-$loop for printing the pattern and the program

should validate the input to make sure that it is an integer and is larger than $0,$prompt

an error message for invalid input.