from fastcore.all import *
x = "Deck the halls with boughs of holly" x
L("la")*8
def sing(): return L("Fa", *L("la")*8)
sing()
print("Tis the season to be jolly")
" ".join(sing())
repr("Don we now our gay apparel")
s = sing() s
"".join(s[0:3])
for i in range(0,3): print("".join(s[i:i+3]))
"Troll the ancient yuletide carol"
L(zip(s[0:5], s[1:5])) + 'la'