Write a python program which asks user to enter value for number of line and then according to input following pattern should be displayed.

Code:-

num = int(input("Enter the number of D pattern:"))

string = ""

def D_Pattern(string, n):

    for i in range(0, n):    

        for j in range(0, n):

            if (j == 1 or ((i == 0 or i == n-1) and

               (j > 1 and j < n-2)) or (j == n-2 and i != 0 and i != n-1)):   

                string = string + "*"   

            else:      

                string = string + " "

        string = string + "\n"   

    return(string)

print(D_Pattern(string, num))

Output:-