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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 merge_batches(self, data):
 		"""Merge a list of data minibatches into one single instance representing the data 		Parameters 		data: list 			List of minibatches to merge 		Returns 		------- 		(anonymous):
 sparse matrix | pd.DataFrame | list 			Single complete list-like data merged from given batches 		"""

		if isinstance(data[0], ssp.csr_matrix):  return ssp.vstack(data)
		if isinstance(data[0], pd.DataFrame) or isinstance(data[0], pd.Series):  return pd.concat(data)
		return [item for sublist in data for item in sublist]