Jupyter screenshot for the following Mathematica code is shown alongside python analogue. The latter scales axes' labels and plot thickness, not the former: is there a Plot[] option for that?
SetOptions[Plot,
Background -> GrayLevel[0.95],
AxesStyle -> Black,
LabelStyle -> Black
];
Plot[Sin[x], {x, 0, 10},ImageSize->100]

P.S. : The reason for SetOptions is the default background is black. Is that a new thing?