jupytext misc fixes in py scripts

BLcourse2.3/01_one_dim.py

@@ -410,7 +410,9 @@ with torch.no_grad():
         if ii == 1:
             ax.legend()
     ax_sigmas.legend()
+# -
 
+# +
 # When running as script
 if not is_interactive():
     plt.show()

BLcourse2.3/02_two_dim.py

@@ -370,6 +370,8 @@ ax.set_zlim((contour_z, zlim[1] + abs(contour_z)))
 ax.contourf(data_pred.XG, data_pred.YG, y_std, zdir="z", offset=contour_z)
 # -
 
+# +
 # When running as script
 if not is_interactive():
     plt.show()
+# -