Write a function named sum_elements to compute the sum of all the elements of each tuple stored inside a list of tuples and return a list of these sums. The number of elements in the tuples might vary. For example, if lst_tpl = [(1,2,3),(5,6),(7,)], sum_elements(lst_tpl) should return [6, 11, 7]

Sure, I can help you with that! Here's the implementation of the function sum_elements:

def sum_elements(lst_tpl):
    sum_list = []
    for tpl in lst_tpl:
        tpl_sum = sum(tpl)
        sum_list.append(tpl_sum)
    return sum_list

In this function, we first create an empty list called `sum_list` which will store the sum of each tuple. Then, we iterate through each tuple in the given list of tuples `lst_tpl`. For each tuple, we use the built-in `sum` function to calculate its sum and store it in a variable called `tpl_sum`. Finally, we append this `tpl_sum` to the `sum_list`. After we have looped through all the tuples, we return this `sum_list`.

You can test this function by calling it with a list of tuples, like this:

lst_tpl = [(1,2,3),(5,6),(7,)]
print(sum_elements(lst_tpl))

This will output `[6, 11, 7]`, which is the expected result.