# Basic syntax:
your_list.extend([element]*number)
# Where:
#    - element is the element you want to add to your_list
#    - number is the number of times you want it repeated

# Note, .extend modifies your_list in place

# Example usage:
your_list = [1, 2, 3]
your_list.extend([0]*5)
print(your_list)
--> [1, 2, 3, 0, 0, 0, 0, 0]