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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 _decode_hex(self, value):
 		"""Helper function to decode hex string to `proper` hex string 		:param string value: Human readable hex string 		:return string: Hex string 		"""

		result = ''
		for i in range(0, len(value), 2):
			tmp = int(value[i:i + 2], 16)
			result += chr(tmp)
		return result