import random
def scramble(string):
"""Scramble and return a string, preserving spaces."""
return ' '.join([''.join(random.sample(word, len(word))) for word in string.split()])
import random
def scramble(string):
"""Scramble and return a string, preserving spaces."""
return ' '.join([''.join(random.sample(word, len(word))) for word in string.split()])