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:
Table of Contents
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’)
Read: Career Opportunities in Python: Everything You Need To Know
Pattern #3: Half Pyramid Pattern of Numbers
Pattern:
1
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:
1
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:
1
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
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()
Check out: Top 36 Python Interview Questions & Answers: Ultimate Guide
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:
1
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”)
Also Read: 42 Exciting Python Project Ideas & Topics for Beginners
Learn More About Python
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.