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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 _find_path(self, search_dirs, file_name):
 """ Search for the given file, and return the path. Returns None if the file is not found. """

        for dir_path in search_dirs:
            file_path = os.path.join(dir_path, file_name)
            if os.path.exists(file_path):
                return file_path

        return None