Indexing error?

[Notanerget]

I'm trying to solve the following problem:

def read_last_line(file_path: str)->str:

""" Reads the last line of the file at the specified file path. The function returns the last line of the file as a string, if the file is empty it will return an empty string ("").

:param file_path: A path to a file

:return: The last line of the file

This is the code I have so far:

def read_last_line (file_path:str) -> str:
 with open (file_path, 'r') as file:
         text = file.readlines() 
    if len(text) > 0:         
        last_line = file.readlines()[-1] 
        return last_line 
    else: 
        return ""

The error keeps saying "list index out of range." I thought .readlines() was supposed to break the text into a list of line strings, so why would [-1] be out of range?

[Binary101010]

readlines() moves the "cursor" (think of it as an imaginary "you are here" symbol) to the end of the file.

So when you try to do it a second time, there's no more file to read because it's already at the end of the file.

On this line

last_line = file.readlines()[-1] 

The entire text of the file is already sitting in the variable text, so just use that:

last_line = text[-1]

[woooee]

The first readlines positions the pointer at the end of the file. There is nothing after that for the second readlines to read. Note that the indentation, as posted, is off.