def get_headers(self, header_name):
		""" Return header value by its name

		:param header_name: header name
		:return: tuple of str
		"""
		header_name = self.normalize_name(header_name)
		if header_name in self.__headers.keys():
			return tuple(self.__headers[header_name])
def get_headers ( self , header_name ) : header_name = self . normalize_name ( header_name ) if header_name in self . __headers . keys ( ) : return tuple ( self . __headers [ header_name ] )
Return header value by its name

		:param header_name: header name
		:return: tuple of str