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

Input:-

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

def pattern(n):

    for i in range(1, n + 1):

        for j in range(1, 2 * n + 1):

            if (i < j):

                print("", end = " ");

            else:

                print("*", end = "");

            if (i <= ((2 * n) - j)):

                print("", end = " ");

            else:

                print("*", end = "");

        print("");

    for i in range(1, n + 1):

        for j in range(1, 2 * n + 1):

            if (i > (n - j + 1)):

                print("", end = " ");

            else:

                print("*", end = "");

            if ((i + n) > j):

                print("", end = " ");

            else:

                print("*", end = "");

        print(""); 

pattern(num);

Output:-