add element to list python at index

list.insert(index, element)

# The insert() method inserts an element to the list 
# at a given index.
# Syntax: list_name.insert(index, element)
my_list = ["Add", "Answer"]
my_list.insert(1, "Grepper")
print (my_list)
> ['Add', 'Grepper', 'Answer']

thislist = ["apple", "banana", "cherry"]
thislist.insert(1, "orange")

my_list = []
item1 = "test1"
my_list.append(item1)

print(my_list) 
# prints the list ["test1"]