add together all items in a list code example

Example 1: append two items to list

my_list = ['a']
# You can use list.append(value) to append a single value:
my_list.append('b')
# my_list should look like ['a','b']

# and list.extend(iterable) to append multiple values.
my_list.extend(('b','c'))
# my_list should look like ['a','b','c']

Example 2: add all items in list to another list python

a = [1]
b = [2,3]
a.extend(b)
print(a)

------  OR  -------
a += b