ast

>>> a, b = 1, 2

# The ast module gives us:

>>> import ast
>>> ast.dump(ast.parse('a, b = 1, 2'))
"Module(body=[Assign(targets=[Tuple(elts=[Name(id='a', ctx=Store()), Name(id='b', ctx=Store())], ctx=Store())], value=Tuple(elts=[Num(n=1), Num(n=2)], ctx=Load()))])"