Answers for "how to add + symbol between the list of numbers in python in int"

Sum items in a list with ints and strings in python

def sum_mix(arr):
    sumIntStr = sum(map(int, arr))
    return sumIntStr
sum_mix(['5', '0', 9, 3, 2, 1, '9', 6, 7])

how to add numbers into a list python

a_list = [1, 2, 3]
integers_to_append = 4.
a_list. append(integers_to_append)
print(a_list)