translation module python failure for make web

[Graham Percival]

/home/lilypond/lilypond/stepmake/stepmake/podir-targets.make:14:
warning: ignoring old commands for target `po-update'
make[5]: Nothing to be done for `messages'.
make[5]: Leaving directory
`/home/lilypond/lilypond/Documentation/po'
/usr/bin/python ../../../buildscripts/texi-gettext.py fr
out-www/lilypond-learning.texi
texi_gettext.py
Traceback (most recent call last):
  File "../../../buildscripts/texi-gettext.py", line 29, in ?
    _doc = langdefs.translation[lang]
AttributeError: 'module' object has no attribute 'translation'
make[4]: *** [out-www/lilypond-learning.pdftexi] Error 1
make[4]: Leaving directory
`/home/lilypond/lilypond/Documentation/fr/user'
make[3]: *** [WWW] Error 2
make[3]: Leaving directory
`/home/lilypond/lilypond/Documentation/fr'
make[2]: *** [WWW] Error 2
make[2]: Leaving directory `/home/lilypond/lilypond/Documentation'
make[1]: *** [WWW] Error 2
make[1]: Leaving directory `/home/lilypond/lilypond'
make: *** [web] Error 2