flake8: disable E731: do not assign a lambda expression, use a def
flake8: disable E731: do not assign a lambda expression, use a def

It has too many false positives.  It was complaining about things like

    if this:
         fn = some_func
    else:
         fn = lambda x: ...

Where obviously, "fn" can't be a def, and it would be silly to introduce
some other name to use as the def, just to assign it to fn.

jeandet/meson,jpakkane/meson,MathieuDuponchelle/meson,thiblahute/meson,jpakkane/meson,trhd/meson,QuLogic/meson,becm/meson,becm/meson,thiblahute/meson,mesonbuild/meson,becm/meson,thiblahute/meson,trhd/meson,pexip/meson,pexip/meson,jeandet/meson,trhd/meson,becm/meson,jeandet/meson,becm/meson,trhd/meson,MathieuDuponchelle/meson,thiblahute/meson,mesonbuild/meson,mesonbuild/meson,ernestask/meson,MathieuDuponchelle/meson,jpakkane/meson,pexip/meson,mesonbuild/meson,thiblahute/meson,jeandet/meson,MathieuDuponchelle/meson,QuLogic/meson,QuLogic/meson,thiblahute/meson,thiblahute/meson,trhd/meson,jeandet/meson,jpakkane/meson,mesonbuild/meson,mesonbuild/meson,jeandet/meson,becm/meson,mesonbuild/meson,MathieuDuponchelle/meson,jpakkane/meson,pexip/meson,trhd/meson,jeandet/meson,ernestask/meson,mesonbuild/meson,becm/meson,jpakkane/meson,pexip/meson,jeandet/meson,thiblahute/meson,ernestask/meson,mesonbuild/meson,trhd/meson,ernestask/meson,jpakkane/meson,ernestask/meson,becm/meson,QuLogic/meson,ernestask/meson,becm/meson,pexip/meson,pexip/meson,QuLogic/meson,QuLogic/meson,thiblahute/meson,jpakkane/meson,MathieuDuponchelle/meson,jeandet/meson,MathieuDuponchelle/meson,trhd/meson,ernestask/meson,ernestask/meson,MathieuDuponchelle/meson,pexip/meson,MathieuDuponchelle/meson,QuLogic/meson,jpakkane/meson,trhd/meson,QuLogic/meson,ernestask/meson,QuLogic/meson,mesonbuild/meson,pexip/meson,becm/meson,pexip/meson