Generate a left arrow pattern using alphabets in Python
In this shot, we will learn how to generate a left arrow pattern with the use of alphabets in Python.
We can generate different patterns using Python, once we have developed a strong grip over the concepts involving loops. Here, we will use simple for loops and alphabets to generate a left arrow pattern.
Description
To execute a left arrow pattern using Python programming, we will use 3 for loops, one for the upper half, one for the middle, and the last for the lower half.
Code
Let’s look at the code snippet given below:
# Number of Rows
n=9
# Upper Part
for i in range((n - 1) // 2, 0, -1):
for j in range(i):
ch = chr(64+i)
print(" ", end = " ")
print(ch)
# Middle Part
for i in range(n):
ch = chr(65+i)
print(ch, end = " ")
print()
# Lower Part
for i in range(1, ((n - 1) // 2) + 1):
for j in range(i):
ch = chr(64+i)
print(" ", end = " ")
print(ch)
print()
Explanation
In the code written above:
-
In line 2, we take the input for the number of rows.
-
In lines 6–10, we create a
forloop to generate the upper portion of the arrow. -
In lines 13–16, we create another
forloop to generate the middle portion of the arrow. -
In lines 19–24, we create a
forloop to generate the lower portion of the arrow. -
In lines 8, 14, and 21, we use the end statement to stay on the same line.
-
We use the
print()statement to move on to the next line.
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