input: Write a python function that converts all strings in the tuples within a list to their float equivalents, if convertible.
  assert convert_elements_to_float([("3", "4"), ("1", "26.45"), ("7.32", "8"), ("4", "8")]) == '[(3.0, 4.0), (1.0, 26.45), (7.32, 8.0), (4.0, 8.0)]'
  assert convert_elements_to_float([("4", "4"), ("2", "27"), ("4.12", "9"), ("7", "11")]) == '[(4.0, 4.0), (2.0, 27.0), (4.12, 9.0), (7.0, 11.0)]'
  assert convert_elements_to_float([("6", "78"), ("5", "26.45"), ("1.33", "4"), ("82", "13")]) == '[(6.0, 78.0), (5.0, 26.45), (1.33, 4.0), (82.0, 13.0)]'
output: def convert_elements_to_float(lst):
      return str([tuple(float(item) if item.replace('.', '', 1).isdigit() else item for item in tpl) for tpl in lst])