I'm trying to use the virtualenvwrapper to make a python 3 based virtualenv. However,I'm when I pass the optional interpreter argument, I'm seeing this error. I'm running Ubuntu 15.04. I tried reinstalling virtualenv and virtualenvwrapper without success. Thanks for all your help!
$ mkvirtualenv scriptcutter --python=/usr/bin/python3
Running virtualenv with interpreter /usr/bin/python3
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 8, in <module>
import base64
File "/usr/lib/python3.4/base64.py", line 9, in <module>
import re
File "/usr/lib/python3.4/re.py", line 336, in <module>
import copyreg
File "/usr/local/lib/python2.7/dist-packages/copyreg/__init__.py", line 7, in <module>
raise ImportError('This package should not be accessible on Python 3. '
ImportError: This package should not be accessible on Python 3. Either you are trying to run from the python-future src folder or your installation of python-future is corrupted.
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 53, in apport_excepthook
if not enabled():
File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 24, in enabled
import re
File "/usr/lib/python3.4/re.py", line 336, in <module>
import copyreg
File "/usr/local/lib/python2.7/dist-packages/copyreg/__init__.py", line 7, in <module>
raise ImportError('This package should not be accessible on Python 3. '
ImportError: This package should not be accessible on Python 3. Either you are trying to run from the python-future src folder or your installation of python-future is corrupted.
Original exception was:
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 8, in <module>
import base64
File "/usr/lib/python3.4/base64.py", line 9, in <module>
import re
File "/usr/lib/python3.4/re.py", line 336, in <module>
import copyreg
File "/usr/local/lib/python2.7/dist-packages/copyreg/__init__.py", line 7, in <module>
raise ImportError('This package should not be accessible on Python 3. '
ImportError: This package should not be accessible on Python 3. Either you are trying to run from the python-future src folder or your installation of python-future is corrupted.
I come across same issue, but after I downgrade virtualenv to 12.0.2, this problem disappears.
This is sort of a workaround for now.
Create a virtualenv using pyvenv.
# install pyvenv on Ubuntu
sudo apt-get install python3-venv
To minimize disruption in your normal workflow, pass a destination directory that is the same as the one used by virtualenvwrapper Like so,
pyvenv example ~/.virtualenvs/example
This is automatically working with workon and cdproject commands. I don't use much else that is provided by virtualenvwrapper
Hope this helps.
You can upgrade to the most recent version of virtualenv, with:
sudo pip install --upgrade https://github.com/pypa/virtualenv/archive/master.zip
virtualenv --version
# Returns 15.2.0.dev0 when I ran it
The following command then works:
mkvirtualenv scriptcutter --python=/usr/bin/python3
Apparently, the develop branch was dropped, so the URL with "develop" will no longer work. My answer was based off of #pjotr_dolphin's comment, with the URL updated.
Related
We have an internal wiki and I want to use pywikibot to get some data from it. Installed it from pip but when I import it I get:
>>> import pywikibot
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python3.7/site-packages/pywikibot/__init__.py",
line 25, in <module>
from pywikibot.bot import (
File "/usr/local/lib/python3.7/site-packages/pywikibot/bot.py", line
105, in <module>
from pywikibot import config2 as config
File "/usr/local/lib/python3.7/site-packages/pywikibot/config2.py",
line 373, in <module>
base_dir = get_base_dir()
File "/usr/local/lib/python3.7/site-packages/pywikibot/config2.py",
line 367, in get_base_dir
raise RuntimeError(exc_text)
RuntimeError: No user-config.py found in directory '/vagrant'.
Looking here https://www.mediawiki.org/wiki/Manual:Pywikibot/Installation#Configure_Pywikibot
I see a reference to pwb.py, but that does not exist in
/usr/local/lib/python3.7/site-packages/pywikibot.
What am I missing here?
Thanks!
Installing pywikibot from pip currently only installs the library part. The pwb.py and related console scripts are not included in the PyPI package. That means that you'll need to create the user-config.py manually or download the scripts in some other way.
I believe most pywikibot users just clone the git repo. The general process would be something like this:
git clone https://github.com/wikimedia/pywikibot.git --depth 1
python3 -m pip install -U setuptools
python3 -m pip install -e pywikibot/
cd pywikibot/
python3 pwb.py generate_family_file.py https://url.to.your/wiki/api.php? mywikiname
python3 pwb.py generate_user_files.py
# follow the prompts
Adding generate_family_file is in active development:
https://gerrit.wikimedia.org/r/c/pywikibot/core/+/634544
The other two script will follow later I guess.
Today I installed python 3.7 from apt-get to try out the new dataclasses module. I installed it seperately because python3.6 wasn't upgradeable to 3.7.
When I type: python3.7 --version, it gives me: >>> Python 3.7.0a2 as my current version.
The problem is that I can't seem to import dataclasses.
my import statement is: from dataclasses import dataclass as instructed here
This is the error message it's giving me:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'dataclasses'
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 63, in apport_excepthook
from apport.fileutils import likely_packaged, get_recent_crashes
File "/usr/lib/python3/dist-packages/apport/__init__.py", line 5, in <module>
from apport.report import Report
File "/usr/lib/python3/dist-packages/apport/report.py", line 30, in <module>
import apport.fileutils
File "/usr/lib/python3/dist-packages/apport/fileutils.py", line 23, in <module>
from apport.packaging_impl import impl as packaging
File "/usr/lib/python3/dist-packages/apport/packaging_impl.py", line 24, in <module>
import apt
File "/usr/lib/python3/dist-packages/apt/__init__.py", line 23, in <module>
import apt_pkg
ModuleNotFoundError: No module named 'apt_pkg'
Original exception was:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'dataclasses'
I even tried installing the dataclasses module with pip3: pip3 install dataclasses. Not sure if that's necessary though.
Any suggestion on what might be the problem?
[EDIT] Just tried it with a python3.6 console and it worked fine .. weird.
As suggested by #wim python3.7 -m venv venv_dir
This command will:
Use python3.7 to run the command
The -m flag tells the interpreter to run the next argument as a script
venv is a module, and because of the -m flag it will be run as a script
Finally, the venv_dir is given to the venv module as an argument which
this module will use to create a virtual environment directory at
Once this command is run now you'll have a nice sandbox for messing around/testing the dataclasses module.
To activate this virtual environment be sure to run source venv_dir/bin/activate before you begin. This command will run the script at venv_dir/bin/activate to set up the necessary environment variables and other things for you
To deactivate, simply run deactivate after activating
I have virtual environment created for python 3.6. And I have install python3-pyqt5.qtwebkit package with apt-get. The package have installed in global python3.5 and its working, but if I try to import it from venv python3.6 there is import error... How can I install this package in my virtual environment? Or if this is not possible how can I use global package installed in 3.5 in my virtualenv 3.6 python.
Running with global python3.5
(virtualenv)
~/vcs-ss/sst master ✗ 5d ▴ ⚑ ✚ ◒
▶ python3.5 -c 'import PyQt5.QtWebKit; print(PyQt5.QtWebKit.__file__)'
/usr/lib/python3/dist-packages/PyQt5/QtWebKit.cpython-35m-x86_64-linux-gnu.so
Running with python3.6 from venv
(virtualenv)
~/vcs-ss/sst master ✗ 5d ▴ ⚑ ✚ ◒
▶ python3.6 test/e2e/browser.py
Traceback (most recent call last):
File "test/e2e/browser.py", line 8, in <module>
from PyQt5.QtWebKit import *
ModuleNotFoundError: No module named 'PyQt5.QtWebKit'
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 63, in apport_excepthook
from apport.fileutils import likely_packaged, get_recent_crashes
File "/usr/lib/python3/dist-packages/apport/__init__.py", line 5, in <module>
from apport.report import Report
File "/usr/lib/python3/dist-packages/apport/report.py", line 30, in <module>
import apport.fileutils
File "/usr/lib/python3/dist-packages/apport/fileutils.py", line 23, in <module>
from apport.packaging_impl import impl as packaging
File "/usr/lib/python3/dist-packages/apport/packaging_impl.py", line 23, in <module>
import apt
File "/usr/lib/python3/dist-packages/apt/__init__.py", line 23, in <module>
import apt_pkg
ModuleNotFoundError: No module named 'apt_pkg'
Original exception was:
Traceback (most recent call last):
File "test/e2e/browser.py", line 8, in <module>
from PyQt5.QtWebKit import *
ModuleNotFoundError: No module named 'PyQt5.QtWebKit'
In order to use system packages inside a virtual environment, you have to use --system-site-packages option when creating virtual env:
virtualenv --python=python3.6 --system-site-packages env
The same switch is available in Python3's venv.
Much better option is (if applicable in your case) to install all packages inside your virtual env, using pip.
If you look at the contents of the package (using dpkg --listfiles python3-pyqt5.qtwebkit) you'll probably see something like this:
/.
/usr
/usr/lib
/usr/lib/python3
/usr/lib/python3/dist-packages
/usr/lib/python3/dist-packages/PyQt5
/usr/lib/python3/dist-packages/PyQt5/QtWebKit.cpython-35m-x86_64-linux-gnu.so
/usr/lib/python3/dist-packages/PyQt5/QtWebKit.pyi
/usr/lib/python3/dist-packages/PyQt5/QtWebKitWidgets.cpython-35m-x86_64-linux-gnu.so
/usr/lib/python3/dist-packages/PyQt5/QtWebKitWidgets.pyi
/usr/share
/usr/share/doc
/usr/share/doc/python3-pyqt5.qtwebkit
/usr/share/doc/python3-pyqt5.qtwebkit/copyright
/usr/share/doc/python3-pyqt5.qtwebkit/changelog.Debian.gz
The package installs binary modules compiled for a specific python version (in this case: cpython-35m), you won't be able to use those from a python3.6 installation/venv directly because of the incompatible binary names.
For that to work you'd need to symlink all the .so files in the PyQt5 directory to your venv and there change cpython-35m-x86_64-linux-gnu to cpython-36m-x86_64-linux-gnu. Same for the sip libraries, as those are requiered by PyQt5. And that will only work if the ABI is compatible between the two versions.
A quick test with the versions mentioned above shows it works at least for simple scripts, but I can't give any guarantee.
tox runs my Python 2.7 tests, but fails for Python 3.4. It gives an "Invocation failed" message. Excerpts:
py34 create: /home/josh/code/ezoutlet/.tox/py34
ERROR: invocation failed (exit code 1), logfile: /home/josh/code/ezoutlet/.tox/py34/log/py34-0.log
ERROR: actionid: py34
msg: getenv
cmdargs: ['/usr/bin/python', '-m', 'virtualenv', '--python', '/usr/bin/python3.4', 'py34']
And later
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 8, in <module>
import base64
File "/usr/lib/python3.4/base64.py", line 9, in <module>
import re
File "/usr/lib/python3.4/re.py", line 336, in <module>
import copyreg
File "/usr/local/lib/python2.7/dist-packages/copyreg/__init__.py", line 7, in <module>
raise ImportError('This package should not be accessible on Python 3. '
ImportError: This package should not be accessible on Python 3. Either you are trying to run from the python-future src folder or your installation of python-future is corrupted.
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 53, in apport_excepthook
if not enabled():
File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 24, in enabled
import re
File "/usr/lib/python3.4/re.py", line 336, in <module>
import copyreg
File "/usr/local/lib/python2.7/dist-packages/copyreg/__init__.py", line 7, in <module>
raise ImportError('This package should not be accessible on Python 3. '
ImportError: This package should not be accessible on Python 3. Either you are trying to run from the python-future src folder or your installation of python-future is corrupted.
Original exception was:
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 8, in <module>
import base64
File "/usr/lib/python3.4/base64.py", line 9, in <module>
import re
File "/usr/lib/python3.4/re.py", line 336, in <module>
import copyreg
File "/usr/local/lib/python2.7/dist-packages/copyreg/__init__.py", line 7, in <module>
raise ImportError('This package should not be accessible on Python 3. '
ImportError: This package should not be accessible on Python 3. Either you are trying to run from the python-future src folder or your installation of python-future is corrupted.
Running virtualenv with interpreter /usr/bin/python3.4
ERROR: InvocationError: /usr/bin/python -m virtualenv --python /usr/bin/python3.4 py34 (see /home/josh/code/ezoutlet/.tox/py34/log/py34-0.log)
You need to look at the details of the error message. Notice the command that failed (from the first excerpt):
cmdargs: ['/usr/bin/python', '-m', 'virtualenv', '--python', '/usr/bin/python3.4', 'py34']
You can run this manually with:
/usr/bin/python -m virtualenv --python /usr/bin/python3.4 py34
Assuming you see the same error, your issue is with virtualenv rather than tox.
I reviewed the virtualenv help page and it seems like this should work. Faced with a possible bug, a good first step is to upgrade Python, virtualenv, or other libraries.
In my case, upgrading virtualenv was the solution:
pip install --upgrade virtualenv
Interestingly, this solution worked on both Windows and Linux. Most likely, there was a bug fix between when I got virtualenv and the latest release.
I'm trying to get a work project that I git-cloned from work (used in numerous other places, I know the project works fine) to run on my MacBook. I installed Django (via sudo python setup.py install), as well as MySQL, the Python MySQL wrapper, and also virtualenv with virtualenvwrapper.
After creating a virtualenv for my project (virtualenv is created fine), and doing a pip install for the project requirements (all of which install into the proper virtualenv directory), an attempt to do a runserver command spits out the following:
Traceback (most recent call last):
File "manage.py", line 12, in <module>
execute_manager(settings)
File "/Library/Python/2.6/site-packages/django/core/management/__init__.py", line 436, in execute_manager
setup_environ(settings_mod)
File "/Library/Python/2.6/site-packages/django/core/management/__init__.py", line 419, in setup_environ
project_module = import_module(project_name)
File "/Library/Python/2.6/site-packages/django/utils/importlib.py", line 35, in import_module
__import__(name)
ImportError: No module named website-backend
First try to import this library from python or ./manage.py shell.
If that fails import sys and check if your lib is in sys path print sys.path