以下代码用来实现阶梯型字符的输出：

# 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)

输出：

A 
BB 
CCC 
DDDD 
EEEEE