python - How to instantiate multiple lists to the same value, though distinct in memory? -

i need declare 3 different lists (initially) same value:

a = b = c = ["ralph"] 

but when append "a":

a.append("wiggum") 

the following results generated:

print a, b, c >>["ralph", "wiggum"] ["ralph", "wiggum"] ["ralph", "wiggum"] 

what need is:

print a, b, c >>["ralph", "wiggum"] ["ralph"] ["ralph"] 

i know if make use of copy.copy() or instantiate new list, create new space in memory. looking short (preferably 1 line) way similar a=b=c generates distinct lists. how can this?

if want one-liner, can this:

a, b, c = (["ralph"] _ in range(3)) 

but frankly, if it's small list example, i'd make obvious:

a, b, c = ["ralph"], ["ralph"], ["ralph"]