In [18]: a,b=[1,2,3],[1,2,3]
In [19]: a
Out[19]: [1, 2, 3]
In [20]: b
Out[20]: [1, 2, 3]
you may also want to do this:
In [22]: a=b=[1,2,3]
In [23]: a
Out[23]: [1, 2, 3]
In [24]: b
Out[24]: [1, 2, 3]
but be careful that, a is b
is True
in this case, namely, a
is just a reference of b