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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def endswith(self, search_str):
 """Check whether the provided string exists in Journal file. Only checks the last 5 lines of the journal file. This method is usually used when tracking a journal from an active Revit session. Args: search_str (str):
 string to search for Returns: bool: if True the search string is found """

        for entry in reversed(list(open(self._jrnl_file, 'r'))[-5:]):
            if search_str in entry:
                return True

        return False