Hot to split string literals that will across two or more lines ?

[Xiao Jianfeng]

Hi,

I need to print a long sting, which is two long so it must expand two
lines.
I know that we can use backslash(\) to explicitly join two lines into a
logical line,
but this doesn't work for string literals :(

my code:
-----------------------------------------------------------------------------
if sth.:
print "a string whcih is very very looooooooooooooooooooooooooooooooooo\
oooooooooooooooooooong."
-----------------------------------------------------------------------------

If I don't break the line, it will be very ugly, if I break the
line,....but how ?

Thanks in advance!

xiaojf