05-14-2019
OK I will take your word for it...
Well if you wish to have Python 2.x.x temporarily you could try copying 'python' to 'python3' in probably the '/usr/bin/' drawer and then copying 'python2' to 'python'; and when finished change back again so that 'python3' becomes python again.
It should see the correct PYTHONPATH but don't quote me on it.
The only problem might be special modules, say for example 'scipy', might not be seen.
It is up to you but I still say DON'T! Even experienced professional programmers would think twice before messing.
EDIT:
You might need to be in 'root' to do this...
Last edited by wisecracker; 05-14-2019 at 02:26 PM..
Reason: See EDIT:
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LEARN ABOUT DEBIAN
python2.7-config
PYTHON-CONFIG(1) General Commands Manual PYTHON-CONFIG(1)
NAME
python-config - output build options for python C/C++ extensions or embedding
SYNOPSIS
python-config [ --prefix ] [ --exec-prefix ] [ --includes ] [ --libs ] [ --cflags ] [ --ldflags ] [ --help ]
DESCRIPTION
python-config helps compiling and linking programs, which embed the Python interpreter, or extension modules that can be loaded dynamically
(at run time) into the interpreter.
OPTIONS
--cflags
print the C compiler flags.
--ldflags
print the flags that should be passed to the linker.
--includes
similar to --cflags but only with -I options (path to python header files).
--libs similar to --ldflags but only with -l options (used libraries).
--prefix
prints the prefix (base directory) under which python can be found.
--exec-prefix
print the prefix used for executable program directories (such as bin, sbin, etc).
--help print the usage message.
EXAMPLES
To build the singe-file c program prog against the python library, use
gcc $(python-config --cflags --ldflags) progr.cpp -o progr.cpp
The same in a makefile:
CFLAGS+=$(shell python-config --cflags)
LDFLAGS+=$(shell python-config --ldflags)
all: progr
To build a dynamically loadable python module, use
gcc $(python-config --cflags --ldflags) -shared -fPIC progr.cpp -o progr.so
SEE ALSO
python (1)
http://docs.python.org/extending/extending.html
/usr/share/doc/python/faq/extending.html
AUTHORS
This manual page was written by Johann Felix Soden <johfel@gmx.de> for the Debian project (and may be used by others).
November 27, 2011 PYTHON-CONFIG(1)