Rendy Tan rendykstan

## py_data_model.py
#!/usr/bin/python
"""
It is used to signify the absence of a value in many situations, e.g., it is returned from functions that don’t explicitly
return anything.
"""
print 'None - Its truth value is False.'
bottle = None
if not bottle:
    print 'This proves that the truth value of None is False'
"""

## vacuum_analyze.py
#!/usr/bin/python
import psycopg2
import sys

con = None
query = ''

try:
    if len(sys.argv) == 6:
	#!/usr/bin/python
	"""
	It is used to signify the absence of a value in many situations, e.g., it is returned from functions that don’t explicitly
	return anything.
	"""
	print 'None - Its truth value is False.'
	bottle = None
	if not bottle:
	print 'This proves that the truth value of None is False'
	"""
	#!/usr/bin/python
	import psycopg2
	import sys

	con = None
	query = ''

	try:
	if len(sys.argv) == 6: