You can use random.choice and list.remove
from random import choice as rchoice
mylist = range(10)
while mylist:
choice = rchoice(mylist)
mylist.remove(choice)
print choice
Or, as @Henry Keiter said, you can use random.shuffle
from random import shuffle
mylist = range(10)
shuffle(mylist)
while mylist:
print mylist.pop()
If you still need your shuffled list after that, you can do as follows:
...
shuffle(mylist)
mylist2 = mylist
while mylist2:
print mylist2.pop()
And now you will get an empty list mylist2, and your shuffled list mylist.
EDIT
About code you posted. You are writing random.choice(colors), but what random.choice does? It choices random answer and returns(!) it. So you have to write
chosen_color = random.choice(colors)
if chosen_color == "red":
print "The color is red!"
colors.remove("red") ##Remove string from the list
chosen_number = random.choice(numbers)
if chosen_number == "2":
chosen_design = random.choice(design)
