PEP8 cleanup: import only one module per import statement
PEP8 cleanup: import only one module per import statement

Reviewed-by: James Cameron <979be511e3d216882811a349af33a6d24f3f5f99@laptop.org>
Acked-by: Simon Schampijer <088e16a1019277b15d58faf0541e11910eb756f6@laptop.org>

ceibal-tatu/sugar-base,sugarlabs/sugar-base,sugarlabs/sugar-base,tchx84/debian-pkg-sugar-base,sugarlabs/sugar-base,ceibal-tatu/sugar-base,tchx84/debian-pkg-sugar-base,ceibal-tatu/sugar-base,tchx84/debian-pkg-sugar-base