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.
# 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 = 5pypart(n) |
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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 = 5pypart(n) |
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# 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 = 5pypart2(n) |
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Output:
*
* *
* * *
* * * *
* * * * *
# 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 = 5triangle(n) |
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Output:
*
* *
* * *
* * * *
* * * * *
# 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 = 5numpat(n) |
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Output:
1 1 2 1 2 3 1 2 3 4 1 2 3 4 5
# 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) |
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Output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
# 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 = 5alphapat(n) |
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Output:
A B B C C C D D D D E E E E E
# 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 = 5contalpha(n) |
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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.
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.
# 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 = 5pypart(n) |
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Output:
* * * * * * * * * * * * * * *
# 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 = 5pypart2(n) |
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Output:
*
* *
* * *
* * * *
* * * * *
# 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 = 5triangle(n) |
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Output:
*
* *
* * *
* * * *
* * * * *
# 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 = 5numpat(n) |
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Output:
1 1 2 1 2 3 1 2 3 4 1 2 3 4 5
# 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) |
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Output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
# 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 = 5alphapat(n) |
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Output:
A B B C C C D D D D E E E E E
# 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 = 5contalpha(n) |
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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.
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