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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 _unzip_file(self, zip_file, out_folder):
 """ unzips a file to a given folder """

        try:
            zf = zipfile.ZipFile(zip_file, 'r')
            zf.extractall(path=out_folder)
            zf.close()
            del zf
            return True
        except:
            return False