Feature EasierPythonDebugging ?

[Sérgio Basto]

Hello , 
I'd like use this gdb python [1] , but can't put it work on Fedora 24,
last problems mentioned are about Fedora 13 , can someone help me on
pointing how I could use New_gdb_commands [2] ? 
Thanks ,

[1] 
https://fedoraproject.org/wiki/Features/EasierPythonDebugging#Current_state-of-the-art_for_debugging_CPython_backtraces

[2] 
https://fedoraproject.org/wiki/Features/EasierPythonDebugging#New_gdb_commands
https://wiki.python.org/moin/DebuggingWithGdb

-- 
Sérgio M. B.
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Feature EasierPythonDebugging ?

[Sérgio Basto]

Hello , 
I'd like use this gdb python [1] , but can't put it work on Fedora 24,
last problems mentioned are about Fedora 13 , can someone help me on
pointing how I could use New_gdb_commands [2] ? 
Thanks ,

[1] 
https://fedoraproject.org/wiki/Features/EasierPythonDebugging#Current_state-of-the-art_for_debugging_CPython_backtraces

[2] 
https://fedoraproject.org/wiki/Features/EasierPythonDebugging#New_gdb_commands

-- 
Sérgio M. B.
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Re: Unable to install packages in a Python 3 virtual environment created with venv module with --system-site-packages option

[Craig Rodrigues]

On Thursday, February 2, 2017, Tadej Janež  wrote:
>
>
> Which in turn means 'pip3 install Django' actually used the system-wide
> pip3 command which tried to install Django to the system-wide location
> and failed.
>
>
After you create your Python 3 virtualev, what files are in the bin
directory of your  Pythin 3 virtualenv?
Is there a pip file?

Once you are inside your virtualenv and sourced the bin/activate script, my
advice to you is to either:

- just run the command "pip"
- run the command "python -m pip"

The second way looks for the pip module in PYTHONPATH, instead of a pip
script in PATH.

--
Craig
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Unable to install packages in a Python 3 virtual environment created with venv module with --system-site-packages option

[Tadej Janež]

Hi!

If I create a Python 2 virtual environment with virtualenv and the --
system-site-packages option, installation of any subsequent package
works as expected:

[vagrant@tadej-zbook ~]$ rpm -q python2-virtualenv
python2-virtualenv-15.0.3-2.fc25.noarch
[vagrant@tadej-zbook ~]$ virtualenv --system-site-packages myvenv2
New python executable in /home/vagrant/myvenv2/bin/python2
Also creating executable in /home/vagrant/myvenv2/bin/python
Installing setuptools, pip, wheel...done.
[vagrant@tadej-zbook ~]$ source myvenv2/bin/activate
(myvenv2) [vagrant@tadej-zbook ~]$ pip install Django
Collecting Django
  Downloading Django-1.10.5-py2.py3-none-any.whl (6.8MB)
100% || 6.8MB 214kB/s 
Installing collected packages: Django
Successfully installed Django-1.10.5

On the other hand, if I create a Python 3 virtual environment with venv
and use the --system-site-packages option, installation of any
subsequent package fails:

[vagrant@tadej-zbook ~]$ rpm -q python3-libs
python3-libs-3.5.2-4.fc25.x86_64
[vagrant@tadej-zbook ~]$ python3 -m venv --system-site-packages myvenv3
[vagrant@tadej-zbook ~]$ source myvenv3/bin/activate
(myvenv3) [vagrant@tadej-zbook ~]$ pip3 install Django
Collecting Django
  Using cached Django-1.10.5-py2.py3-none-any.whl
Installing collected packages: Django
Exception:
Traceback (most recent call last):
  File "/usr/lib/python3.5/site-packages/pip/basecommand.py", line 215,
in main
status = self.run(options, args)
  File "/usr/lib/python3.5/site-packages/pip/commands/install.py", line
326, in run
strip_file_prefix=options.strip_file_prefix,
  File "/usr/lib/python3.5/site-packages/pip/req/req_set.py", line 742,
in install
**kwargs
  File "/usr/lib/python3.5/site-packages/pip/req/req_install.py", line
834, in install
strip_file_prefix=strip_file_prefix
  File "/usr/lib/python3.5/site-packages/pip/req/req_install.py", line
1037, in move_wheel_files
strip_file_prefix=strip_file_prefix,
  File "/usr/lib/python3.5/site-packages/pip/wheel.py", line 346, in
move_wheel_files
clobber(source, lib_dir, True)
  File "/usr/lib/python3.5/site-packages/pip/wheel.py", line 317, in
clobber
ensure_dir(destdir)
  File "/usr/lib/python3.5/site-packages/pip/utils/__init__.py", line
83, in ensure_dir
os.makedirs(path)
  File "/usr/lib64/python3.5/os.py", line 241, in makedirs
mkdir(name, mode)
PermissionError: [Errno 13] Permission denied:
'/usr/lib/python3.5/site-packages/Django-1.10.5.dist-info'

Apparently pip inside the virtual environment tried to install Django
to the system-wide location (/usr/lib/python3.5/site-packages/) and
failed (as expected). But why did it try to install Django in the
system-wide location instead of virtual environment's site-packages
directory?

Taking a closer look to the created Python 3 virtual environment
reveals that it doesn't contain it's own pip3 command:

(myvenv3) [vagrant@tadej-zbook ~]$ ls -al myvenv3/bin/
total 20
drwxrwxr-x. 2 vagrant vagrant 4096 Feb  2 14:49 .
drwxrwxr-x. 5 vagrant vagrant 4096 Feb  2 14:49 ..
-rw-r--r--. 1 vagrant vagrant 2143 Feb  2 14:49 activate
-rw-r--r--. 1 vagrant vagrant 1259 Feb  2 14:49 activate.csh
-rw-r--r--. 1 vagrant vagrant 2397 Feb  2 14:49 activate.fish
lrwxrwxrwx. 1 vagrant vagrant7 Feb  2 14:49 python -> python3
lrwxrwxrwx. 1 vagrant vagrant   16 Feb  2 14:49 python3 ->
/usr/bin/python3

Which in turn means 'pip3 install Django' actually used the system-wide 
pip3 command which tried to install Django to the system-wide location
and failed.

Is there a reason this behavior has changed compared to Python 2 and
virtualenv command or is it simply a bug that I should report?

Thanks for help and regards,
Tadej
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