Answer :
For given that L has been defined to refer to a list , the expression whose value is a set containing all the elements of L is
set = { 1,2,3,4}
Writing List in Python :
Lists are used to store multiple items in one variable. Lists are one of Python's four built-in data types used to store collections of data, the other three being tuples, sets and dictionaries, all of different qualities and uses.
A list is a container which holds comma-separated values (items or elements) between square brackets where items or elements need not all have the same type.
#Programme representation
Input:
#Python code
#A list L is initialised
L = [ 3,4,2,1 ]
#set L containing all elements of list L
print(str(set(L)))
Output:
{ 1, 2, 3, 4 }
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