Python: How to pass arguments as a list to a function that takes a variable number of arguments • Programmer

Some functions take in their parameters a variable number of arguments *args, for example, the itertools.product function.

list(itertools.product(['a', 'b'], [1, 2]))

# [('a', 1), ('a', 2), ('b', 1), ('b', 2)]

list(itertools.product(['a', 'b'], [1, 2]))

# [('a', 1), ('a', 2), ('b', 1), ('b', 2)]

In order to pass the list as the parameters to this function, we need to use the * operator:

my_list = [['a', 'b'], [1, 2]]

list(itertools.product(*my_list))

# [('a', 1), ('a', 2), ('b', 1), ('b', 2)]

my_list = [['a', 'b'], [1, 2]]

list(itertools.product(*my_list))

# [('a', 1), ('a', 2), ('b', 1), ('b', 2)]