python append front

var = 7
array = [1,2,3,4,5,6]
array.insert(0,var)
print(array)
# [7, 1, 2, 3, 4, 5, 6]

>>>var=7
>>>array = [1,2,3,4,5,6]
>>>array.insert(0,var)
>>>array
[7, 1, 2, 3, 4, 5, 6]

Multiple ways
>test_list.insert(0, 6) 
>test_list.appendleft(6) 
>test_list = [6] + test_list 
>test_list[:0] = [6]