Print formatted tables in Python (Rows might overflow, but otherwise the output is pretty

pretty_tables.py

def show_table(titles, rows, table_name=None, sep_rows=False):
	'''
	Print a pretty, formatted and spaced table
	Parameters:
		- header (iterable)	: Sequence with titles for each column
		- rows (iterable)	: Sequence of rows in the table, 
							  must contain len(header) items.
		- table_name (str): if the caller want to, print a title
		- sep_rows (bool): should the function print a seperetor between values
	'''
	
	# If we have no data, create a NULL line
	if len(rows) == 0:
		rows.append(['NULL' for i in titles])

	# Even if we don't have column titles, we still to know how many there are
	if titles is None:
		titles = ['' for x in rows[0]]

	# Print a newline as a seperetor
	print('')

	# Lambda function to find the biggest string for each column
	get_biggest = lambda x: max([max([str(row[x]) for row in rows], key=len),\
							titles[x]], key=len)

	# Find the biggest string in each column
	biggest_strings = [len(get_biggest(i)) for i, x in enumerate(titles)]
	

	# Print seperetor (the size of the biggest string + 3 for ' | ' seperetors)
	print_seperetor(sum(biggest_strings) + (3 * (len(titles) + 1)))

	# If we have a table name, print it
	if table_name is not None:
		# Add the number of items to the title
		table_name = '%s (%d)' % (str(table_name), len(rows))
		# Width of table - place for '|' at start at end of line
		size = (sum(biggest_strings) + (3 * (len(titles) + 1))) - 4
		print(' |%s|' % str(table_name).center(size, ' '))

	# Print seperetor (the size of the biggest string + 3 for ' | ' seperetors)
	print_seperetor(sum(biggest_strings) + (3 * (len(titles) + 1)))

	# If the titles are real and weren't created in the above if
	if not (filter(None, titles) == []):
		# Craft header for the table
		line = ['']
		for idx, header in enumerate(titles):
			# We use str.center to have nice formatting and spacing
			line.append(str(header).center(biggest_strings[idx], ' '))

		# Append empty string to have another ' | ' at the end of the line
		line.append('')
		
		# Print the header of the table
		print(' | '.join(line))

		# Print seperetor (the size of the biggest string + 3 for ' | ' seperetors)
		print_seperetor(sum(biggest_strings) + (3 * (len(titles) + 1)))

	# Print the rows
	for row in rows:
		line = ['']
		# Craft a line
		for idx, item in enumerate(row):
			# We use str.center to have nice formatting and spacing
			line.append(str(item).center(biggest_strings[idx]))
		# Append empty string to have another ' | ' at the end of the line
		line.append('')
		# Print the line
		print(' | '.join(line))

		# If we should seperate values
		if sep_rows:
			# Print another seperetor
			print_seperetor(sum(biggest_strings) + (3 * (len(titles) + 1)))

	# If we are seperating values, there is already a seperator
	if not sep_rows:
		# Print seperetor (the size of the biggest string + 3 for ' | ' seperetors)
		print_seperetor(sum(biggest_strings) + (3 * (len(titles) + 1)))

	# Print a newline as another seperetor
	print('')

def print_seperetor(size=10):
	'''
	Print a seperetor to sepreate different sections of the UI
	Parameters:
		- size (int): the size of the seperetor
	'''
	# Make sure it's an int
	if not isinstance(size, int):
		size = 10
	print('-' * size)

Example:

from utils import show_table

table_name = 'Projects'
columns = ('Name', 'Description')
rows = (
    ('Databases-Project', 'End of term MySQL project'),
    ('TalkASM', 'Client-Server based chat written in x86 Assembly'),
    ('oZip', 'Simple text compression using Python and Huffman trees')
    )

show_table(columns, rows, table_name, True)

'''
Output:

--------------------------------------------------------------------------------
 |                                Projects (3)                                |
--------------------------------------------------------------------------------
 |        Name       |                      Description                       | 
--------------------------------------------------------------------------------
 | Databases-Project |               End of term MySQL project                | 
--------------------------------------------------------------------------------
 |      TalkASM      |    Client-Server based chat written in x86 Assembly    | 
--------------------------------------------------------------------------------
 |        oZip       | Simple text compression using Python and Huffman trees | 
--------------------------------------------------------------------------------

'''