Le 16/04/17 à 15:19, Wolfgang Maier a écrit :
On 16.04.2017 10:56, Vincent Vande Vyvre wrote:
Hi,
I'm using Python 3.5 and 3.6 in venv and I see a strange behaviour in
the interactive interpreter.
The arrow keys can't be used to move the cursor into the current line of
code or to rewrite the last lines.
With the 3.5 I can use the backspace and erase the code but not in 3.6
Python 3.5.2 (default, Dec 19 2016, 11:46:33)
[GCC 4.8.4] on linux
Type "help", "copyright", "credits" or "license" for more information.
f = "kjhfgt"^[[D # Left Arrow Key
^[[A # Up Arrow Key
Python 3.6.1 (default, Apr 12 2017, 11:39:17)
[GCC 4.8.4] on linux
Type "help", "copyright", "credits" or "license" for more information.
f = "lkjgh"
^[[A^[[B # Up Arrow Key and Backspace Key
File "<stdin>", line 1
^
SyntaxError: invalid syntax
Make sure you build Python (I guess you did this for 3.6, but are
probably using your OS Python3.5) with readline. This needs the dev
version of the readline library installed at build time.
So, step 1 would be to get the library, then rebuild Python3.6 by
running:
1) make clean
2) ./configure
3) make
It could be worthwhile checking for other missing optional C libraries
first though. If you want to make sure you have all of them, follow
the steps described here:
https://docs.python.org/devguide/setup.html#build-dependencies
Best,
Wolfgang
No, both are in venv, my system version is the 3.4.
Anyway, after "apt-get build-dep python3.4" and following your advice
all works as expected.
Thanks Wolfgang.
Incidentally, with the 3.6 I've added the argument
"--enable-optimizations" to the configure.
The unitest were executed and fail with hashlib, then it rerun some
compilation, rerun the unittest, refail with hashlib, recompile some
modules and finish without error. (see a little part of the log below)
I don't know if this is relevant ...
Vincent
----------------------------------------
0:06:47 [161/405] test_hash
0:06:49 [162/405] test_hashlib
Fatal Python error: Segmentation fault
Current thread 0x00002af5c0cfa380 (most recent call first):
File
"/home/vincent/CPython/Python-3.6.1/Lib/test/support/__init__.py", line
1508 in gc_collect
File
"/home/vincent/CPython/Python-3.6.1/Lib/test/libregrtest/save_env.py",
line 271 in __exit__
File
"/home/vincent/CPython/Python-3.6.1/Lib/test/libregrtest/runtest.py",
line 168 in runtest_inner
File
"/home/vincent/CPython/Python-3.6.1/Lib/test/libregrtest/runtest.py",
line 129 in runtest
File
"/home/vincent/CPython/Python-3.6.1/Lib/test/libregrtest/main.py", line
343 in run_tests_sequential
File
"/home/vincent/CPython/Python-3.6.1/Lib/test/libregrtest/main.py", line
418 in run_tests
File
"/home/vincent/CPython/Python-3.6.1/Lib/test/libregrtest/main.py", line
490 in _main
File
"/home/vincent/CPython/Python-3.6.1/Lib/test/libregrtest/main.py", line
468 in main
File
"/home/vincent/CPython/Python-3.6.1/Lib/test/libregrtest/main.py", line
532 in main
File "/home/vincent/CPython/Python-3.6.1/Lib/test/regrtest.py", line
46 in _main
File "/home/vincent/CPython/Python-3.6.1/Lib/test/regrtest.py", line
50 in <module>
File "/home/vincent/CPython/Python-3.6.1/Lib/runpy.py", line 85 in
_run_code
File "/home/vincent/CPython/Python-3.6.1/Lib/runpy.py", line 193 in
_run_module_as_main
Segmentation fault (core dumped)
make[1]: quittant le répertoire « /home/vincent/CPython/Python-3.6.1 »
make build_all_merge_profile
make[1]: entrant dans le répertoire « /home/vincent/CPython/Python-3.6.1 »
true
make[1]: quittant le répertoire « /home/vincent/CPython/Python-3.6.1 »
Rebuilding with profile guided optimizations:
make clean
make[1]: entrant dans le répertoire « /home/vincent/CPython/Python-3.6.1 »
find . -depth -name '__pycache__' -exec rm -rf {} ';'
find . -name '*.py[co]' -exec rm -f {} ';'
find . -name '*.[oa]' -exec rm -f {} ';'
find . -name '*.s[ol]' -exec rm -f {} ';'
find . -name '*.so.[0-9]*.[0-9]*' -exec rm -f {} ';'
find build -name 'fficonfig.h' -exec rm -f {} ';' || true
find build -name '*.py' -exec rm -f {} ';' || true
find build -name '*.py[co]' -exec rm -f {} ';' || true
rm -f pybuilddir.txt
rm -f Lib/lib2to3/*Grammar*.pickle
rm -f Programs/_testembed Programs/_freeze_importlib
find build -type f -a ! -name '*.gc??' -exec rm -f {} ';'
rm -f Include/pydtrace_probes.h
make[1]: quittant le répertoire « /home/vincent/CPython/Python-3.6.1 »
make build_all_use_profile
make[1]: entrant dans le répertoire « /home/vincent/CPython/Python-3.6.1 »
make build_all CFLAGS_NODIST=" -fprofile-use -fprofile-correction "
LDFLAGS=" "
make[2]: entrant dans le répertoire « /home/vincent/CPython/Python-3.6.1 »
gcc -pthread -c -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv
-O3 -Wall -Wstrict-prototypes -std=c99 -Wextra -Wno-unused-result
-Wno-unused-parameter -Wno-missing-field-initializers -fprofile-use
-fprofile-correction -I. -I./Include -DPy_BUILD_CORE -o
Programs/python.o ./Programs/python.c
....
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