ch=input("Enter the charcter: ")
if ch>='a' and ch<='z' or ch>='A' and ch<='Z':
    if ch>='a' and ch<='z':
        print("lower case alphabet.")
    else:
        print("upper case alphabet.")
else:
    print("Given charcter is not alphabet.")

12fa9cc172260e8f0442700ee998804ce9572e05
<mask token>

<mask token>
if ch >= 'a' and ch <= 'z' or ch >= 'A' and ch <= 'Z':
    if ch >= 'a' and ch <= 'z':
        print('lower case alphabet.')
    else:
        print('upper case alphabet.')
else:
    print('Given charcter is not alphabet.')

ch = input('Enter the charcter: ')
if ch >= 'a' and ch <= 'z' or ch >= 'A' and ch <= 'Z':
    if ch >= 'a' and ch <= 'z':
        print('lower case alphabet.')
    else:
        print('upper case alphabet.')
else:
    print('Given charcter is not alphabet.')

ch=input("Enter the charcter: ")
if ch>='a' and ch<='z' or ch>='A' and ch<='Z':
    if ch>='a' and ch<='z':
        print("lower case alphabet.")
    else:
        print("upper case alphabet.")
else:
    print("Given charcter is not alphabet.")
