Using python ast parser to process multi line strings

When using the python AST parser module in combination with scripts containing multi line strings, these multi line strings are always reduced to single line quoted strings. Example:

import ast

script = "text='''Line1\nLine2'''"

code = ast.parse (script, mode='exec')
print (ast.unparse (code))

node = code.body[0].value
print (node.lineno, node.end_lineno)

The output is:

> text = 'Line1\nLine2'
> 1 2

So in spite of being a multi line string before parsing, the text is reduced to a single line quoted string when unparsed. This makes script transformation difficult, because the multi lines are getting lost when unparsing a transformed AST graph.

Is there a way to parse/unparse scripts with multi line strings correctly with AST ?

Thank you in advance.