The following beamer file compiles fine under the sequence
pdflatex -shell-escape file
pythontex file
pdflatex -shell-escape file
file.tex:
\documentclass{beamer}
\usepackage{pythontex}
\begin{document}
\begin{frame}
\py{2}
\pyv{a}
\end{frame}
\end{document}
producing
(For something more colourful, replace \pyv{a} by e.g. \pyv{float} to get
)
However, replacing the class beamer by beamerswitch to get
\documentclass{beamerswitch}
\usepackage{pythontex}
\begin{document}
\begin{frame}
\py{2}
\pyv{a}
\end{frame}
\end{document}
fails to render the \pyv output
I am pretty certain that code of this form worked 1 year ago for me. In comments this has been confirmed for a texlive 2019 set-up.
The problem persists for anything pythontex related to pygments. Using the fancyvrb prettyprinter by calling
\usepackage[prettyprinter=fancyvrb]{pythontex}
gives correct output in both cases.
Any method of fixing the pygments version would be appreciated, as beamerswitch is very useful for my purposes.
Ideas pointing to where the problem may lie, and reports of which systems it does or does not work on, would also be of help. Currently it is not clear to me which component is at fault, so where I can report a bug/issue.
File versions
I am running LaTeX2e <2020-10-01> patch level 4 under texlive 2020 an a mac.
\listfiles produces the long list of file versions below.
Downgrading beamerswitch to version 1.6.1 does not help.
Downgrading pythontex to version 0.16 does not help either.
From comments it appears that the code works in a texlive 2019 set-up.
*File List*
beamerswitch.cls 2020/06/06 v1.7 Convenient mode selection in Beamer documents
xkeyval.sty 2020/11/20 v2.8 package option processing (HA)
xkeyval.tex 2014/12/03 v2.7a key=value parser (HA)
xkvltxp.sty 2014/05/25 v1.3 LaTeX2e kernel patch (HA)
etoolbox.sty 2020/10/05 v2.5k e-TeX tools for LaTeX (JAW)
xstring.sty 2019/02/06 v1.83 String manipulations (CT)
shellesc.sty 2019/11/08 v1.0c unified shell escape interface for LaTeX
iftex.sty 2020/03/06 v1.0d TeX engine tests
beamer.cls 2020/11/26 v3.60 A class for typesetting presentations
beamerbasemodes.sty
beamerbasedecode.sty
ifpdf.sty 2019/10/25 v3.4 ifpdf legacy package. Use iftex instead.
beamerbaseoptions.sty
geometry.sty 2020/01/02 v5.9 Page Geometry
ifvtex.sty 2019/10/25 v1.7 ifvtex legacy package. Use iftex instead.
size11.clo 2020/04/10 v1.4m Standard LaTeX file (size option)
pgfcore.sty 2020/12/27 v3.1.8b (3.1.8b)
graphicx.sty 2020/09/09 v1.2b Enhanced LaTeX Graphics (DPC,SPQR)
graphics.sty 2020/08/30 v1.4c Standard LaTeX Graphics (DPC,SPQR)
trig.sty 2016/01/03 v1.10 sin cos tan (DPC)
graphics.cfg 2016/06/04 v1.11 sample graphics configuration
pdftex.def 2020/10/05 v1.2a Graphics/color driver for pdftex
pgfsys.sty 2020/12/27 v3.1.8b (3.1.8b)
pgfrcs.sty 2020/12/27 v3.1.8b (3.1.8b)
pgfrcs.code.tex
pgfsys.code.tex
pgfsyssoftpath.code.tex 2020/12/27 v3.1.8b (3.1.8b)
pgfsysprotocol.code.tex 2020/12/27 v3.1.8b (3.1.8b)
xcolor.sty 2016/05/11 v2.12 LaTeX color extensions (UK)
color.cfg 2016/01/02 v1.6 sample color configuration
pgfcore.code.tex
xxcolor.sty 2003/10/24 ver 0.1
atbegshi-ltx.sty 2020/08/17 v1.0a Emulation of the original atbegshi package
with kernel methods
hyperref.sty 2020-05-15 v7.00e Hypertext links for LaTeX
ltxcmds.sty 2020-05-10 v1.25 LaTeX kernel commands for general use (HO)
pdftexcmds.sty 2020-06-27 v0.33 Utility functions of pdfTeX for LuaTeX (HO)
infwarerr.sty 2019/12/03 v1.5 Providing info/warning/error messages (HO)
kvsetkeys.sty 2019/12/15 v1.18 Key value parser (HO)
kvdefinekeys.sty 2019-12-19 v1.6 Define keys (HO)
pdfescape.sty 2019/12/09 v1.15 Implements pdfTeX's escape features (HO)
hycolor.sty 2020-01-27 v1.10 Color options for hyperref/bookmark (HO)
letltxmacro.sty 2019/12/03 v1.6 Let assignment for LaTeX macros (HO)
auxhook.sty 2019-12-17 v1.6 Hooks for auxiliary files (HO)
kvoptions.sty 2020-10-07 v3.14 Key value format for package options (HO)
pd1enc.def 2020-05-15 v7.00e Hyperref: PDFDocEncoding definition (HO)
intcalc.sty 2019/12/15 v1.3 Expandable calculations with integers (HO)
etexcmds.sty 2019/12/15 v1.7 Avoid name clashes with e-TeX commands (HO)
url.sty 2013/09/16 ver 3.4 Verb mode for urls, etc.
bitset.sty 2019/12/09 v1.3 Handle bit-vector datatype (HO)
bigintcalc.sty 2019/12/15 v1.5 Expandable calculations on big integers (HO)
hpdftex.def 2020-05-15 v7.00e Hyperref driver for pdfTeX
atveryend-ltx.sty 2020/08/19 v1.0a Emulation of the original atvery package
with kernel methods
rerunfilecheck.sty 2019/12/05 v1.9 Rerun checks for auxiliary files (HO)
uniquecounter.sty 2019/12/15 v1.4 Provide unlimited unique counter (HO)
beamerbaserequires.sty
beamerbasecompatibility.sty
beamerbasefont.sty
amssymb.sty 2013/01/14 v3.01 AMS font symbols
amsfonts.sty 2013/01/14 v3.01 Basic AMSFonts support
sansmathaccent.sty 2020/01/31
scrlfile.sty 2020/09/21 v3.32 KOMA-Script package (file load hooks)
scrlfile-hook.sty 2020/09/21 v3.32 KOMA-Script package (using LaTeX hooks)
scrlogo.sty 2020/09/21 v3.32 KOMA-Script package (logo)
beamerbasetranslator.sty
translator.sty 2020-08-03 v1.12c Easy translation of strings in LaTeX
beamerbasemisc.sty
beamerbasetwoscreens.sty
beamerbaseoverlay.sty
beamerbasetitle.sty
beamerbasesection.sty
beamerbaseframe.sty
beamerbaseverbatim.sty
beamerbaseframesize.sty
beamerbaseframecomponents.sty
beamerbasecolor.sty
beamerbasenotes.sty
beamerbasetoc.sty
beamerbasetemplates.sty
beamerbaseauxtemplates.sty
beamerbaseboxes.sty
beamerbaselocalstructure.sty
enumerate.sty 2015/07/23 v3.00 enumerate extensions (DPC)
beamerbasenavigation.sty
beamerbasetheorems.sty
amsmath.sty 2020/09/23 v2.17i AMS math features
amstext.sty 2000/06/29 v2.01 AMS text
amsgen.sty 1999/11/30 v2.0 generic functions
amsbsy.sty 1999/11/29 v1.2d Bold Symbols
amsopn.sty 2016/03/08 v2.02 operator names
amsthm.sty 2020/05/29 v2.20.6
beamerbasethemes.sty
beamerthemedefault.sty
beamerfontthemedefault.sty
beamercolorthemedefault.sty
beamerinnerthemedefault.sty
beamerouterthemedefault.sty
xparse.sty 2020-10-27 L3 Experimental document command parser
expl3.sty 2021-01-09 L3 programming layer (loader)
l3backend-pdftex.def 2020-01-29 L3 backend support: PDF output (pdfTeX)
pythontex.sty 2019/09/22 v0.17 execute and typeset Python code and other languages
fvextra.sty 2019/02/04 v1.4 fvextra - extensions and patches for fancyvrb
ifthen.sty 2014/09/29 v1.1c Standard LaTeX ifthen package (DPC)
fancyvrb.sty 2021/01/20 v3.7 verbatim text (tvz,hv)
upquote.sty 2012/04/19 v1.3 upright-quote and grave-accent glyphs in verbatim
lineno.sty 2005/11/02 line numbers on paragraphs v4.41
pgfopts.sty 2014/07/10 v2.1a LaTeX package options with pgfkeys
pgfkeys.sty
pgfkeys.code.tex
newfloat.sty 2019/09/02 v1.1l Defining new floating environments (AR)
currfile.sty 2020/09/29 v0.7d Provides the file path elements of the current input file
filehook.sty 2020/09/29 v0.8a Hooks for input files
filehook-2020.sty 2020/09/29 v0.8a Hooks for input files
supp-pdf.mkii
epstopdf-base.sty 2020-01-24 v2.11 Base part for package epstopdf
epstopdf-sys.cfg 2010/07/13 v1.3 Configuration of (r)epstopdf for TeX Live
nameref.sty 2019/09/16 v2.46 Cross-referencing by name of section
refcount.sty 2019/12/15 v3.6 Data extraction from label references (HO)
gettitlestring.sty 2019/12/15 v1.6 Cleanup title references (HO)
file.out
file.out
translator-basic-dictionary-English.dict
translator-bibliography-dictionary-English.dict
translator-environment-dictionary-English.dict
translator-months-dictionary-English.dict
translator-numbers-dictionary-English.dict
translator-theorem-dictionary-English.dict
pythontex-files-file/file.pytxmcr
***********
beamerswitch(1.6.1) and TeX Live 2019, there the 2 and the a both appear normally.beamerswitch (1.6.1)(by placing it in the local directory) does not solve the problem.