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

# 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:

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

Another Approach:
Using List in Python 3, this could be done in a simpler way

# Python 3.x code to demonstrate star pattern 
  
# Function to demonstrate printing pattern 
def pypart(n): 
    myList = [] 
    for i in range(1,n+1): 
        myList.append("*"*i) 
    print("\n".join(myList)) 
  
# Driver Code 
n = 5
pypart(n) 

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) 

Output:

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

Printing Triangle

# 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) 

Output:

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

Number Pattern

# 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) 

Output:

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) 

Output:

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

Character Pattern

# 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) 

Output:

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

Continuous Character pattern

# 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) 

Output:

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

This article is contributed by Manjeet Singh(S.Nupur) . If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.

Simple pyramid pattern

# 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) 

Output:

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

Printing Triangle

# 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) 

Output:

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

Number Pattern

# 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) 

Output:

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) 

Output:

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

Character Pattern

# 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) 

Output:

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

Continuous Character pattern

# 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) 

Output:

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

Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.

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