old_contents: """
  Utility function for working with term rankings.
  """
  
  def term_rankings_size( term_rankings ):
  	"""
  	Return the number of terms covered by a list of multiple term rankings.
  	"""
  	m = 0
  	for ranking in term_rankings:
  		if m == 0:
  			m = len(ranking)
  		else:
  			m = min( len(ranking), m ) 
  	return m
  
  def truncate_term_rankings( orig_rankings, top ):
  	"""
  	Truncate a list of multiple term rankings to the specified length.
  	"""
  	if top < 1:
  		return orig_rankings
  	trunc_rankings = []
  	for ranking in orig_rankings:
  		trunc_rankings.append( ranking[0:min(len(ranking),top)] )
  	return trunc_rankings
  
  def format_term_rankings( term_rankings, labels = None, top = 10 ):
  	"""
  	Format a list of multiple term rankings using PrettyTable.
  	"""
  	from prettytable import PrettyTable
  	# add header
  	header = ["Rank"]
  	if labels is None:
  		for i in range( len(term_rankings) ):
  			header.append("C%02d" % (i+1) )	
  	else:
  		for label in labels:
  			header.append(label)	
  	tab = PrettyTable(header)
  	# add body
  	for pos in range(top):
  		row = [ str(pos+1) ]
  		for ranking in term_rankings:
  			# have we run out of terms?
  			if len(ranking) <= pos:
  				row.append( "" ) 
  			else:
  				row.append( ranking[pos] ) 
  		tab.add_row( row )
  	return tab
  
new_contents: """
  Utility function for working with term rankings.
  """
  
  def term_rankings_size( term_rankings ):
  	"""
  	Return the number of terms covered by a list of multiple term rankings.
  	"""
  	m = 0
  	for ranking in term_rankings:
  		if m == 0:
  			m = len(ranking)
  		else:
  			m = min( len(ranking), m ) 
  	return m
  
  def truncate_term_rankings( orig_rankings, top ):
  	"""
  	Truncate a list of multiple term rankings to the specified length.
  	"""
  	if top < 1:
  		return orig_rankings
  	trunc_rankings = []
  	for ranking in orig_rankings:
  		trunc_rankings.append( ranking[0:min(len(ranking),top)] )
  	return trunc_rankings
  
  
subject: Remove redundant code