Am 22.06.2019 um 15:47 schrieb José Abílio Matos: > On Friday, 21 June 2019 14.41.40 WEST Jürgen Womser-Schütz wrote: >> For me the Cmake build (Win 10) isn't working anymore: Python3 is not >> found but is is installed and in the path. >> >> After successful compilation und running LyX I get on the LyX-console >> the message: >> >> Looking for python 3.x ... >> Examining C:/Program Files (x86)/Python37//python3.exe >> Looking for python 2.x ... >> Warning: No python v2.x or 3.x binary found. >> >> It seems to me that the reason is in the function "python23_call()", >> module "os.cpp", in which a batch command-line is generated. >> The command-line is the concatenation of the string "python3" and a >> string "version_info", yielding: >> >> python3 -c 'from __future__ import print_function;import sys; >> print(sys.version_info[:2], end=\"\")' >> >> This command worked in PowerShell (on my system the result was (3,7)), >> but not for the command console "cmd" (I got a syntax error). >> For "cmd" I need to substitute the characters ' by the characters ". >> >> The problem for me is to change this for Windows and not to destroy LyX >> for other operation systems > OK. Let us try to find a solution that works in all environments. :-) > > python3 -c "from __future__ import print_function;import sys; > print(sys.version_info[:2], end=\"\")" > > From the original case I have replaced the outer single quotes by double > quotes. > > This works in bash on linux but fails on csh (C shell - actually tc shell). > > An equivalente versions is: > python3 -c "from __future__ import print_function;import sys; > print(sys.version_info[:2], end='')" > > The inner escaped double quotes were transformed in single quotes. This now > works for bash and csh. > > Does this version works for cmd and PowerShell on windows? > > Best regards,
You are right! Your version python3 -c "from __future__ import print_function;import sys; print(sys.version_info[:2], end='')" works for me. Best regards and thanks for the help Jürgen (JWS)
