In the pattern questions in python language, for loop is used for printing different patterns. Printing different patterns with a few twists is the most common type of programming question that is asked in the interviews. A pattern can be printed by using multiple loops. It is not possible to print a pattern with a single for loop. The concept followed by a majority of pattern programs is: 1. For printing the number of rows, the outer loop is utilized. 2.For printing the number of columns, the inner loop is utilized. 3. As per the required place in Python, a variable is used to print whitespaces in the program. Every pattern program in python is made with the use of these concepts itself. By defining three different variables for rows, columns, and whitespaces, respectively, you can create any pattern based on your requirements.