How to split a string as if it's a command-line argument?

Question

I have the following string in Python :

l='-n context[@id="interpol_run"]/file_definition/file[@id="dia"]/variable[@name="title"]         -t "SRC mask interpolated to DST"'

I want to split it in a list, with this result :

['-n', 'context[@id="interpol_run"]/file_definition/file[@id="dia"]/variable[@name="title"]', '-t', '"SRC mask interpolated DST"']

i.e, I need a split that won't split between "

With l.split() I get :

['-n', 'context[@id="interpol_run"]/file_definition/file[@id="dia"]/variable[@name="title"]', '-t', '"SRC', 'mask', 'interpolated', 'to', 'DST"']

In fact, I want' the result that sys.argv will give with this string on the command line :

python '-n context[@id="interpol_run"]/file_definition/file[@id="dia"]/variable[@name="title"]         -t "SRC mask interpolated to DST"'

sys.argv is :

['-n', 'context[@id="interpol_run"]/file_definition/file[@id="dia"]/variable[@name="title"]', '-t', 'SRC mask interpolated DST']

sys.arg has even removed the " in the last string

N.B : the first part is the syntax of an xml node as understood by xml.etree.ElementTree module

Any hint?