Downloading a file form a displayed table

[Νίκος Γκρ33κ]

# =================================================================================================================
# display download button for each file and downlaod it on click
# =================================================================================================================
if form.getvalue('show') == 'files':

	print ( "<center><a href='http://superhost.gr/files.html'> <img src='/data/images/download.png'></a><br>" )
	print ( "<table border=5 cellpadding=5 bgcolor=blue>" )

	path = "/data/files/"
	
	for filename in os.walk(path):
		print '''
		<form method="get" action="%s">
			print( "<tr><td><center> <button type='submit'> %s </button> </td></tr>" ) % filename
		</form>
		'''
			
	sys.exit(0)

========================

I use the above code to tidplay a filenames table so the user cna download a displayed button style lookign file but its not printing anything for me just an emptry table

'/data/files' has 5 files in it but its not showing any.
I dont see what iam doign wrong