Using a loop + string accumulator to format a List

Question

I created a function definition to get user input (numbers) and then store it into a list.

[52.0, 55.0, 567.0, 92.0, 2.0, 5.0]

and I'm trying to format using a loop w/ string accumulator so it'll look something like this:

{$52.00, $55.00, $567.00, $92.00, $2.00, $5.00}

all without using the .join method. I can easily do it with the .join method, but the goal is to make it in a function definition as a loop so I can use it else where in my program.

Answer 1

Whats the motiviation in not using join?

lst = [52.0, 55.0, 567.0, 92.0, 2.0, 5.0]

def foo(lst):
    bar = ''
    for i in lst:
        i = format(i, '.2f')
        bar+= '${}, '.format(str(i))
    bar = bar.rstrip(', ')
    return '{'+bar+'}'

print(foo(lst))