Python programs to display uppercase letters from A to Z or lowercase letters from a to z have been shown here. Both the iterative and recursive approaches have been covered.

## 1.1. Python program & output to Display Characters from A to Z using Iteration

Code has been copied
# **************************************
# 	alphabetacoder.com
# Python Program to display characters
# from A to Z or a to z using iteration
# ***************************************

# take input of the number
print("Enter 1 to display A to Z")
print("Enter 2 to display a to z")
s = int(input("Your choice >> "))

# display result
if s == 1:
# display uppercase letters
for i in range(ord("A"), ord("Z") + 1):
print(chr(i), end=" ")
elif s == 2:
# display lowercase letters
for i in range(ord("a"), ord("z") + 1):
print(chr(i), end=" ")
else:
print("Wrong choice!")

Output

Case 1:

Enter 1 to display A to Z

Enter 2 to display a to z

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Case 2:

Enter 1 to display A to Z

Enter 2 to display a to z

a b c d e f g h i j k l m n o p q r s t u v w x y z

Case 3:

Enter 1 to display A to Z

Enter 2 to display a to z

Wrong choice!

## 1.2. Python program & output to Display Characters from A to Z using Recursion

Code has been copied
# **************************************
# 	alphabetacoder.com
# Python Program to display characters
# from A to Z or a to z using recursion
# ***************************************

# recursive function to print uppercase A to Z
def print_uppercase(i, j):
# display current character
print(chr(i), end=" ")

# exit condition
if i == j:
return
# call function
i += 1
print_uppercase(i, j)

# recursive function to print lowercase a to z
def print_lowercase(i, j):
# display current character
print(chr(i), end=" ")

# exit condition
if i == j:
return
# call function
i += 1
print_lowercase(i, j)

def main():
# take input of the number
print("Enter 1 to display A to Z")
print("Enter 2 to display a to z")
s = int(input("Your choice >> "))

# display result
if s == 1:
# display uppercase letters
# by calling recursive function
print_uppercase(ord("A"), ord("Z"))

elif s == 2:
# display lowercase letters
# by calling recursive function
print_lowercase(ord("a"), ord("z"))
else:
print("Wrong choice!")

# driver code
main()

Output

Case 1:

Enter 1 to display A to Z

Enter 2 to display a to z

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Case 2:

Enter 1 to display A to Z

Enter 2 to display a to z