How to write Pari GP script in Sage

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Sage can use simple gp-commands / one-liners to associate to a gp-object a sage object. For instance:

sage: a = gp("intnum(t=0, 1, (exp(t)-1)/t)")
sage: a
1.3179021514544038948600088442492318380
sage: type(a)
<class 'sage.interfaces.gp.GpElement'>

or

sage: f = gp('factor(1/matdet(mathilbert(6)))')
sage: f
[2, 14; 3, 9; 5, 5; 7, 5; 11, 1]
sage: type(f)
<class 'sage.interfaces.gp.GpElement'>
sage: f.sage
<bound method InterfaceElement.sage of [2, 14; 3, 9; 5, 5; 7, 5; 11, 1]>
sage: f.sage()
[ 2 14]
[ 3  9]
[ 5  5]
[ 7  5]
[11  1]
sage: type(f.sage())
<class 'sage.matrix.matrix_integer_dense.Matrix_integer_dense'>

For short trips through pari this may be a way. Else the gp-interpreter is GUI enough (for me).