Extend a list without append¶

Extend a list without append.

Sample data:

[10, 20, 30]

[40, 50, 60]

Expected output:

[40, 50, 60, 10, 20, 30]

L1 = [10, 20, 30]
L2 = [40, 50, 60]

L2[:0] = L1

print(L2)

Output:

[10, 20, 30, 40, 50, 60]