python tutorial - Pyramid Python | Programs for printing pyramid patterns in Python - learn python - python programming




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

Let us see how to print Half Triangle Pyramid pattern using an asterisk (star):

# Python 3.x code to demonstrate star pattern
 
# Function to demonstrate printing pattern
def 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 Code
n = 5
pypart(n)

Output:

* 
* * 
* * * 
* * * * 
* * * * * 

After 180 degree rotation

# Python 3.x code to demonstrate star pattern
 
# Function to demonstrate printing pattern
def 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 Code
n = 5
pypart2(n)

python programming - Output :

        * 
      * * 
    * * * 
  * * * * 
* * * * * 

Printing Triangle

Let us see how to print Full Triangle Pyramid pattern using an asterisk (star) :

# Python 3.x code to demonstrate star pattern
 
# Function to demonstrate printing pattern triangle
def triangle(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 - 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 Code
n = 5
triangle(n)

python programming - Output :

    * 
   * * 
  * * * 
 * * * * 
* * * * * 

Number Pattern

Here we will see how to print Half Triangle Pyramid pattern using numbers:

# Python 3.x code to demonstrate star pattern
 
# Function to demonstrate printing pattern of numbers
def 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 code
n = 5
numpat(n)

python programming - Output :

1 
1 2 
1 2 3 
1 2 3 4 
1 2 3 4 5 

Numbers without re assigning

# Python 3.x code to demonstrate star pattern
 
# Function to demonstrate printing pattern of numbers
def 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 Function
contnum(n)

python programming - Output :

1 
2 3 
4 5 6 
7 8 9 10 
11 12 13 14 15 

Character Pattern

Here we will see how to print Half Triangle Pyramid pattern using continous characters:

# Python 3.x code to demonstrate star pattern
 
# Function to demonstrate printing pattern of alphabets
def 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):
         
            # explicitely 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 Code
n = 5
alphapat(n)

python programming - Output :

A 
B B 
C C C 
D D D D 
E E E E E 

Continuous Character pattern

Here we will see how to print Half Triangle Pyramid pattern using alphabets:

python - Sample - python code :

# Python code 3.x to demonstrate star pattern
 
# Function to demonstrate printing pattern of alphabets
def  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):
         
            # explicitely 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 code
n = 5
contalpha(n)

python programming - Output :

A 
B C 
D E F 
G H I J 
K L M N O 

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