Should I loop or use is this list comphrension easier to read?

list_comprehension_templating.py

def create_path(self, field_path):
    base = "\"${}\""
    # Create a template for each value in array
    # reasonable assume iether str or int will be passed
    tmplts = ["['{}']" if isinstance(path, str) else "[{}]" for path in field_path ]
    paths = [tmplts[i].format(field_path[i]) for i in range(len(field_path))]
    full_path = ''.join(paths)

    return base.format(full_path)