Initialize list with values Initializes and fills a list with the specified value. Use a list comprehension and range() to generate a list of length equal to n, filled with the desired values. Omit val to use the default value of 0. def initialize_list_with_values(n, val = 0): return [val for x in range(n)] initialize_list_with_values(5, 2) # [2, 2, 2, 2, 2]