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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 pie(n_labels=5,mode=None):
 	""" 	Returns a DataFrame with the required format for 	a pie plot 	Parameters: 		n_labels : int 			Number of labels 		mode : string 			Format for each item 				'abc' for alphabet columns 				'stocks' for random stock names 	"""
	
	return pd.DataFrame({'values':np.random.randint(1,100,n_labels),
						 'labels':getName(n_labels,mode=mode)})