def is_vowel(letter):
    # Convert to lowercase for easier comparison
    letter = letter.lower()
    
    # Check if the letter is a vowel
    if letter in ['a', 'e', 'i', 'o', 'u']:
        return True
    else:
        return False

# Get input from user
letter = input("Enter a letter: ")

# Validate input (check if it's a single letter)
if len(letter) == 1 and letter.isalpha():
    # Check if it's a vowel
    if is_vowel(letter):
        print(f"'{letter}' is a vowel.")
    else:
        print(f"'{letter}' is a consonant.")
else:
    print("Please enter a single letter only.")

# Alternative method using string methods
# vowels = 'aeiouAEIOU'
# if letter in vowels:
#     print(f"'{letter}' is a vowel.")
# else:
#     print(f"'{letter}' is a consonant.")

# Method 1: Using calendar module
import calendar

# Print January 2023 calendar
print("January 2023 Calendar:")
print(calendar.month(2023, 1))

# Method 2: Using calendar module with more control
print("\nAlternative format:")
cal = calendar.TextCalendar()
print(cal.formatmonth(2023, 1))

# Method 3: Custom calendar display
print("\nCustom format:")
print("    January 2023")
print("Mo Tu We Th Fr Sa Su")

# Get the calendar data
cal_data = calendar.monthcalendar(2023, 1)

# Print each week
for week in cal_data:
    for day in week:
        if day == 0:
            print("   ", end="")
        else:
            print(f"{day:2d} ", end="")
    print()