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.
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’)
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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This article originally published on upGrad blog.
