jquery - python list to newline separated value -

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im trying data in pylon use in jquery autocomplete, librarary i'm using autocomplete requires format

abc pqr xyz

and in python have data in format 

[["abc"], ["pqr"],["xyz"]

how convert list above one.

edit:
trying use these autocompete , i'm using pylons, in query server return list in format 

    [["abc"], ["pqr"],["xyz"]

http://jquery.bassistance.de/autocomplete/demo/ library except remote call in 

abc  pqr xyz

i tried use 

"\n".join(item[0] item in my_list)

but returns data in firebug this. 

'asd\ndad\nweq'

i want in 

abc pqr xyz

any appreciated i'm php developer first time i'm trying code in python.

thnaks 

"\n".join(item[0] item in my_list)

however, what's got json...?


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