(letter)
return _one_hot(index, NUM_LETTERS)
returns one-hot representation of given letter
returns one-hot representation of given letter
returns one - hot representation of given letter
def letter_to_vec(letter):
    '''returns one-hot representation of given letter
    '''
    index = ALL_LETTERS.find(letter)
    return _one_hot(index, NUM_LETTERS)
def letter_to_vec ( letter ) : index = ALL_LETTERS . find ( letter ) return _one_hot ( index , NUM_LETTERS )