array1 = [(u'CLIENT1-00', u'SRVDADOS1:OS', u'MICROSOFT WINDOWS SERVER 2008 R2 STANDARD'),
(u'CLIENT2-01', u'SRVDADOS2:OS', u'MICROSOFT WINDOWS SERVER 2008 STANDARD'),
(u'CLIENT3-01', u'SRVDADOS3:OS', u'MICROSOFT WINDOWS SERVER 2008 STANDARD'),
(u'CLIENT4-00', u'SRVDADOS4:OS', u'LINUX CENTOS'),
(u'CLIENT5-00', u'SRVDADOS7:OS', u'MAINFRAME')]

array2 = [('CLIENT1', 'SRVDADOS1', 'Windows'),
('CLIENT2', 'SRVDADOS2', 'Windows'),
('CLIENT3', 'SRVDADOS3', 'Windows'),
('CLIENT4', 'SRVDADOS4', 'Linux')]

new_result = []
for row in array2:
	client = ''
	host = ''
	os = ''
	if row[0] == 'CLIENT2':
		cc = 'CLIENT2-01'
	elif row[0] == 'CLIENT3':
		cc = 'CLIENT3-01'
	else:
		cc = row[0] + '-00'
	
	if row[2] == 'LINUX CENTOS':
		os = 'Linux'
		
	new_result.append(cc, host, os)	

diff = list(set(array1)-set(new_result))
for j in diff:
    print(j)