# Write a procedure, shift, which takes as its input a lowercase letter,
# a-z and returns the next letter in the alphabet after it, with 'a' 
# following 'z'.

def shift(letter):
    if letter == 'z':
        letter = 'a'
    else:
        letter = chr(ord(letter) + 1)
    return letter


print shift('a')
#>>> b
print shift('n')
#>>> o
print shift('z')
#>>> a
# Write a procedure, shift, which takes as its input a lowercase letter,
# a-z and returns the next letter in the alphabet after it, with 'a' 
# following 'z'.

def shift(letter):
    if letter == 'z':
        letter = 'a'
    else:
        letter = chr(ord(letter) + 1)
    return letter


print shift('a')
#>>> b
print shift('n')
#>>> o
print shift('z')
#>>> a
# Write a procedure, shift, which takes as its input a lowercase letter, # a-z and returns the next letter in the alphabet after it, with 'a' # following 'z'. #>>> b #>>> o #>>> a