Cell[StyleData["Print"],
FontSize->24,
FontColor->RGBColor[1, 0, 0]]
print("big text!")
params = {'axes.titlesize': 20, 'xtick.labelsize': 16, 'ytick.labelsize': 16, 'axes.labelsize': 16}
plt.rcParams.update(params)
There's no way* for Python to control the printed text size,
that's simply 100% dependent on the settings of your terminal emulator.