Python - Cadena de caracteres

lista=["Magdalena","Galleta","Bizcocho","Chocolate","Colacao"]

for cadena in lista:

    print("{}{}{}".format(cadena[0],"-"*(len(cadena)-2),cadena[-1]))

words = ['Fútbol', 'Tenis', 'Basketball', 'Ping Pong', 'Boxeo']

for word in words:

    word = word.strip()

    letters = word[1:-1]

    guiones = ''

    for letter in letters:

        if letter == ' ':

            guiones += '  '

        else:

            guiones += ' _ '

    print('{0} {1} {2}'.format(word[0], guiones, word[-1]))

import re

def hiddenWords(words):

    hideWord = lambda word: '%s%s%s' % (word[0], re.sub(r'\w', ' _ ', word[1:-1]), word[-1])

    return list(map(hideWord, words))

words = ['Palabra', 'Otra palabra', 'Palabra', 'Repetida']

print "\n".join(hiddenWords(words))

def hiddenWords(words):

    hideWord = lambda word: '%s%s%s' % (word[0],''.join([' ' if letter.isspace() else ' _ ' for letter in word[1:-1]]), word[-1])

    return list(map(hideWord, words))

words = ['Palabra', 'Otra palabra', 'Palabra', 'Repetida']

print "\n".join(hiddenWords(words))

P _  _  _  _  _ a

O _  _  _   _  _  _  _  _  _ a

P _  _  _  _  _ a

R _  _  _  _  _  _ a

palabra = "arbol"

nueva_palabra = ""

for i in len(palabra):

       if i == 0 or i == (len(palabra)-1):

            nueva_palabra = nueva_palabra + palabra

       else:

             nueva_palabra = nueva_palabra + "_"