Programs for printing pyramid patterns in Python
Patterns can be printed in python using simple for loops. First outer loop is used to handle number of rows and Inner nested loop is used to handle the number of columns. Manipulating the print statements, different number patterns, alphabet patterns or star patterns can be printed.
Some of the Patterns are shown in this article.
- Simple pyramid pattern
Python3
# Python 3.x code to demonstrate star pattern# Function to demonstrate printing patterndef pypart(n): # outer loop to handle number of rows # n in this case for i in range(0, n): # inner loop to handle number of columns # values changing acc. to outer loop for j in range(0, i+1): # printing stars print("* ",end="") # ending line after each row print("\r")# Driver Coden = 5pypart(n) |
Output
* * * * * * * * * * * * * * *
- Another Approach:
Using List in Python 3, this could be done in a simpler way
Python
# Python 3.x code to demonstrate star pattern# Function to demonstrate printing patterndef pypart(n): myList = [] for i in range(1,n+1): myList.append("*"*i) print("\n".join(myList))# Driver Coden = 5pypart(n) |
Output
* ** *** **** *****
- After 180 degree rotation
Python3
# Python 3.x code to demonstrate star pattern# Function to demonstrate printing patterndef pypart2(n): # number of spaces k = 2*n - 2 # outer loop to handle number of rows for i in range(0, n): # inner loop to handle number spaces # values changing acc. to requirement for j in range(0, k): print(end=" ") # decrementing k after each loop k = k - 2 # inner loop to handle number of columns # values changing acc. to outer loop for j in range(0, i+1): # printing stars print("* ", end="") # ending line after each row print("\r")# Driver Coden = 5pypart2(n) |
Output
*
* *
* * *
* * * *
* * * * * - Printing Triangle
Python3
# Python 3.x code to demonstrate star pattern# Function to demonstrate printing pattern triangledef triangle(n): # number of spaces k = n - 1 # outer loop to handle number of rows for i in range(0, n): # inner loop to handle number spaces # values changing acc. to requirement for j in range(0, k): print(end=" ") # decrementing k after each loop k = k - 1 # inner loop to handle number of columns # values changing acc. to outer loop for j in range(0, i+1): # printing stars print("* ", end="") # ending line after each row print("\r")# Driver Coden = 5triangle(n) |
Output
* * * * * * * * * * * * * * *
- Number Pattern
Python3
# Python 3.x code to demonstrate star pattern# Function to demonstrate printing pattern of numbersdef numpat(n): # initialising starting number num = 1 # outer loop to handle number of rows for i in range(0, n): # re assigning num num = 1 # inner loop to handle number of columns # values changing acc. to outer loop for j in range(0, i+1): # printing number print(num, end=" ") # incrementing number at each column num = num + 1 # ending line after each row print("\r")# Driver coden = 5numpat(n) |
Output
1 1 2 1 2 3 1 2 3 4 1 2 3 4 5
- Numbers without reassigning
Python3
# Python 3.x code to demonstrate star pattern# Function to demonstrate printing pattern of numbersdef contnum(n): # initializing starting number num = 1 # outer loop to handle number of rows for i in range(0, n): # not re assigning num # num = 1 # inner loop to handle number of columns # values changing acc. to outer loop for j in range(0, i+1): # printing number print(num, end=" ") # incrementing number at each column num = num + 1 # ending line after each row print("\r")n = 5# sending 5 as argument# calling Functioncontnum(n) |
Output
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
- Character Pattern
Python3
# Python 3.x code to demonstrate star pattern# Function to demonstrate printing pattern of alphabetsdef alphapat(n): # initializing value corresponding to 'A' # ASCII value num = 65 # outer loop to handle number of rows # 5 in this case for i in range(0, n): # inner loop to handle number of columns # values changing acc. to outer loop for j in range(0, i+1): # explicitly converting to char ch = chr(num) # printing char value print(ch, end=" ") # incrementing number num = num + 1 # ending line after each row print("\r")# Driver Coden = 5alphapat(n) |
Output
A B B C C C D D D D E E E E E
- Continuous Character pattern
Python3
# Python code 3.x to demonstrate star pattern# Function to demonstrate printing pattern of alphabetsdef contalpha(n): # initializing value corresponding to 'A' # ASCII value num = 65 # outer loop to handle number of rows- for i in range(0, n): # inner loop to handle number of columns # values changing acc. to outer loop for j in range(0, i+1): # explicitly converting to char ch = chr(num) # printing char value print(ch, end=" ") # incrementing at each column num = num +1 # ending line after each row print("\r")# Driver coden = 5contalpha(n) |
- Output:
A B C D E F G H I J K L M N O
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