Getting Unique values from LISTS

[aankrose]

#I wrote a program that come as a LIST output like below 

['scext', '80.0']
['scext', 'COLFUJDX440_DS11']
['scext', 'Hard disk 1']
['scext', '100.0']
['scext', 'COLFUJDX440_DS11']
['scext', 'Hard disk 2']
['scext', '200.0']
['scext', 'COLFUJDX440_DS11']
['scext', 'Hard disk 3']
['SCEXTVMD', '100.0']
['SCEXTVMD', 'COLHG600P01_DS33']
['SCEXTVMD', 'Hard disk 1']
['SCEXTVMD', '40.0']
['SCEXTVMD', 'COLHG600P01_DS33']
['SCEXTVMD', 'Hard disk 2']
['SCEXTVM', '100.0']
['SCEXTVMD', 'COLHG600P01_DS33']
['SCEXTVMD', 'Hard disk 3'] 

Output:
--- I would like to get unique value from LIST[0] and print it in below format.

scext    , 80.0,  COLFUJDX440_DS11 , Hard disk 1 ,100.0 , COLFUJDX440_DS11,Hard disk 2 ,200.0 ,COLFUJDX440_DS11,Hard disk 3
SCEXTVMD , 100.0, COLHG600P01_DS33 , Hard disk 1 ,40.0  , COLHG600P01_DS33, Hard disk 2,100.0, COLHG600P01_DS33 , Hard disk 3

Please help me