Writing a Linear Search algorithm - malformed string representation

[Drone4four]

I am writing a linear search algorithm. I've got the main logic under my belt but it's the string representation that I haven't got right. Below is my script and output in my REPL. When I try to search (I call the method seek) for an integer within a list of intergers, the item I test is clearly present but my output shows: "False" as if it is not present.

What can you people tell me about what is wrong with my __str__ and what might you people recommend I use instead? Thanks.

Code:

class LinearSearch:
    # This class accepts an array and an item
    def __init__(self, entered_list=None, item=None):
        self.entered_list = entered_list
        self.item = item
        
    def seek(self, item):
      # Loop through the array and check if the current array element is equal to the item
      for index in self.entered_list:
        if index == item:
            # If it is True, return the index at which the element is found
            return index
        # If the item is never found, return -1
        return False
    
    def __str__(self):
        result = self.seek(self.item)
        if result:
            return str(result) 
        else:
            return "Not Present"

Here is the REPL inputs and outputs:

$ python
Python 3.11.6 (main, Nov 14 2023, 09:36:21) [GCC 13.2.1 20230801] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from linear import LinearSearch
>>> list_obj = [1,2,4,5,7,12,256]
>>> item = 7
>>> item_exists = LinearSearch(list_obj,item)
>>> item_exists
<linear.LinearSearch object at 0x7ff5338add50>
>>> item_exists.seek(7)
False
>>> item_exists.seek(256)
False
>>>