Consider a list: list1 = [6, 7, 8, 9] What is the difference between the following operations on list1: a. list1 * 2 b. list1 *= 2 c. list1 = list1 * 2
Question
Consider a list:
$$ list1 = [6, 7, 8, 9] $$
What is the difference between the following operations on list1:
a. list1 * 2
b. list1 *= 2
c. list1 = list1 * 2
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Answer
Here's the difference between the operations:
a. list1 * 2
This operation replicates the list
list1two times.It returns a new list without modifying
list1.
list1 = [6, 7, 8, 9]
result = list1 * 2
print(result) # Output: [6, 7, 8, 9, 6, 7, 8, 9]
print(list1) # Output: [6, 7, 8, 9]
b. list1 *= 2
This operation modifies the original list
list1by replicating its elements two times in place.The original list
list1is updated.
list1 = [6, 7, 8, 9]
list1 *= 2
print(list1) # Output: [6, 7, 8, 9, 6, 7, 8, 9]
c. list1 = list1 * 2
Similar to (a), this creates a new list by replicating
list1two times.The original list
list1is replaced with this new list.
list1 = [6, 7, 8, 9]
list1 = list1 * 2
print(list1) # Output: [6, 7, 8, 9, 6, 7, 8, 9]
Summary
list1 * 2: Creates a new list, leaveslist1unchanged.list1 *= 2: Modifieslist1in place.list1 = list1 * 2: Creates a new list and reassigns it tolist1.
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