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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 isfile(self, path, follow_symlinks=True):
 """Determine if path identifies a regular file. Args: path: Path to filesystem object. Returns: `True` if path points to a regular file (following symlinks). Raises: TypeError: if path is None. """

        return self._is_of_type(path, S_IFREG, follow_symlinks)