# Top 18 Python Pattern Programs You Must Know About

Preparing for technical interviews takes a lot of preparation, and it’s highly probable that you might have to create Python pattern programs there. That’s why we’ve sorted a list of multiple ideas for pattern printing in Python to start your preparations.

We have multiple kinds of Python pattern programs in this list, so choose your expertise and experience. Make sure that you understand what part of code does what before you move onto the next pattern. Without a proper understanding of how the system works, you would face a lot of difficulty in explaining its working.

Many times, the interviewer asks for an explanation of how you performed pattern printing in Python. Knowing how everything works will help you in answering those questions effectively. Data science certification in your resume improves your chance of getting hired.

You’ll find the Python code along with every pattern below:

## Pattern #1: Simple Number Triangle Pattern

Pattern:

1

2 2

3 3 3

4 4 4 4

5 5 5 5 5

Code:

rows = 6

for num in range(rows):

for i in range(num):

print(num, end=” “) # print number

# line after each row to display pattern correctly

print(” “)

## Pattern #2: Inverted Pyramid of Numbers

Pattern:

1 1 1 1 1

2 2 2 2

3 3 3

4 4

5

Code:

rows = 5

b = 0

for i in range(rows, 0, -1):

b += 1

for j in range(1, i + 1):

print(b, end=’ ‘)

print(‘\r’)

## Pattern #3: Half Pyramid Pattern of Numbers

Pattern:

1 2

1 2 3

1 2 3 4

1 2 3 4 5

Code:

rows = 5

for row in range(1, rows+1):

for column in range(1, row + 1):

print(column, end=’ ‘)

print(“”)

## Pattern #4: Inverted Pyramid of Descending Numbers

Pattern:

5 5 5 5 5

4 4 4 4

3 3 3

2 2

1

Code:

rows = 5

for i in range(rows, 0, -1):

num = i

for j in range(0, i):

print(num, end=’ ‘)

print(“\r”)

## Pattern #5: Inverted Pyramid of the Same Digit

Pattern:

5 5 5 5 5

5 5 5 5

5 5 5

5 5

5

Code:

rows = 5

num = rows

for i in range(rows, 0, -1):

for j in range(0, i):

print(num, end=’ ‘)

print(“\r”)

## Pattern #6: Reverse Pyramid of Numbers

Pattern:

2 1

3 2 1

4 3 2 1

5 4 3 2 1

Code:

rows = 6

for row in range(1, rows):

for column in range(row, 0, -1):

print(column, end=’ ‘)

print(“”)

## Pattern #7: Inverted Half Pyramid Number Pattern

Pattern:

0 1 2 3 4 5

0 1 2 3 4

0 1 2 3

0 1 2

0 1

Code:

rows = 5

for i in range(rows, 0, -1):

for j in range(0, i + 1):

print(j, end=’ ‘)

print(“\r”)

## Pattern #8: Pyramid of Natural Numbers Less Than 10

Pattern:

2 3 4

5 6 7 8 9

Code:

currentNumber = 1

stop = 2

rows = 3 # Rows you want in your pattern

for i in range(rows):

for column in range(1, stop):

print(currentNumber, end=’ ‘)

currentNumber += 1

print(“”)

stop += 2

## Pattern #9: Reverse Pattern of Digits from 10

Pattern:

1

3 2

6 5 4

10 9 8 7

Code:

start = 1

stop = 2

currentNumber = stop

for row in range(2, 6):

for col in range(start, stop):

currentNumber -= 1

print(currentNumber, end=’ ‘)

print(“”)

start = stop

stop += row

currentNumber = stop

## Pattern #10: Unique Pyramid Pattern of Digits

Pattern:

1 2 1

1 2 3 2 1

1 2 3 4 3 2 1

1 2 3 4 5 4 3 2 1

Code:

rows = 6

for i in range(1, rows + 1):

for j in range(1, i – 1):

print(j, end=” “)

for j in range(i – 1, 0, -1):

print(j, end=” “)

print()

## Pattern #11: Connected Inverted Pyramid Pattern of Numbers

Pattern:

5 4 3 2 1 1 2 3 4 5

5 4 3 2 2 3 4 5

5 4 3 3 4 5

5 4 4 5

5 5

Code:

rows = 6

for i in range(0, rows):

for j in range(rows – 1, i, -1):

print(j, ”, end=”)

for l in range(i):

print(‘ ‘, end=”)

for k in range(i + 1, rows):

print(k, ”, end=”)

print(‘\n’)

## Pattern #12: Even Number Pyramid Pattern

Pattern:

10

10 8

10 8 6

10 8 6 4

10 8 6 4 2

Code:

rows = 5

LastEvenNumber = 2 * rows

evenNumber = LastEvenNumber

for i in range(1, rows+1):

evenNumber = LastEvenNumber

for j in range(i):

print(evenNumber, end=’ ‘)

evenNumber -= 2

print(“\r”)

## Pattern #13: Pyramid of Horizontal Tables

Pattern:

0

0 1

0 2 4

0 3 6 9

0 4 8 12 16

0 5 10 15 20 25

0 6 12 18 24 30 36

Code:

rows = 7

for i in range(0, rows):

for j in range(0, i + 1):

print(i * j, end=’ ‘)

print()

## Pattern #14: Pyramid Pattern of Alternate Numbers

Pattern:

3 3

5 5 5

7 7 7 7

9 9 9 9 9

Code:

rows = 5

i = 1

while i <= rows:

j = 1

while j <= i:

print((i * 2 – 1), end=” “)

j = j + 1

i = i + 1

print()

## Pattern #15: Mirrored Pyramid (Right-angled Triangle) Pattern of Numbers

Pattern:

1

1 2

1 2 3

1 2 3 4

1 2 3 4 5

Code:

rows = 6

for row in range(1, rows):

num = 1

for j in range(rows, 0, -1):

if j > row:

print(” “, end=’ ‘)

else:

print(num, end=’ ‘)

num += 1

print(“”)

## Pattern #16: Equilateral Triangle with Stars (Asterisk Symbol)

Pattern:

*

* *

* * *

* * * *

* * * * *

* * * * * *

* * * * * * *

Code:

print(“Print equilateral triangle Pyramid using stars “)

size = 7

m = (2 * size) – 2

for i in range(0, size):

for j in range(0, m):

print(end=” “)

m = m – 1 # decrementing m after each loop

for j in range(0, i + 1):

# printing full Triangle pyramid using stars

print(“* “, end=’ ‘)

print(” “)

## Pattern #17: Downward Triangle Pattern of Stars

Pattern:

* * * * * *

* * * * *

* * * *

* * *

* *

*

Code:

rows = 5

k = 2 * rows – 2

for i in range(rows, -1, -1):

for j in range(k, 0, -1):

print(end=” “)

k = k + 1

for j in range(0, i + 1):

print(“*”, end=” “)

print(“”)

## Pattern #18: Pyramid Pattern of Stars

Pattern:

* *

* * *

* * * *

* * * * *

Code:

rows = 5

for i in range(0, rows):

for j in range(0, i + 1):

print(“*”, end=’ ‘)

print(“\r”)

If you’re interested in learning more about Python, go to our blog and find multiple detailed articles on this topic.

If you have any questions regarding the Python pattern programs we’ve shared here, please let us know through the comments below. We’d love to hear from you.

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## How do you print a pattern in Python?

In the Python programming 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 Python pattern program 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.

## What are Python functions?

A function is a block of reusable, organized code that is useful for performing a single action multiple times. Functions make it pretty easy to increase modularity and reuse the code and make it easy to maintain the application code. Python allows the users to create different functions along with the availability of different built-in functions like print(), ascii(), and many more.

There are four types of Python functions:

1. No return and no argument value of the function
2. Function with a return value but no arguments
3. Function with no return value but an argument
4. Function with both return value and arguments

## What are the different types of design patterns being used in Python?

There are three different types of design patterns in Python, with each of them being used for performing different functions. Patterns are used in Python for emphasizing code readability with the use of notable indentation. Programmers are able to write clear and logical code for small as well as huge projects with the help of design patterns.

Different types of design patterns are:

1. Creational Patterns
2. Structural Patterns
3. Behavioral Patterns

A majority of enterprise development software is built with the usage of these design patterns. By gaining a proper understanding of these design patterns, one can make its use pretty simple and also make the code easy to understand. 