When I run some commands, which work, for example neofetch, it gives me a Python error.
username#host:~$ as
Traceback (most recent call last):
File "/usr/lib/command-not-found", line 28, in <module>
from CommandNotFound import CommandNotFound
File "/usr/lib/python3/dist-packages/CommandNotFound/CommandNotFound.py", line 19, in <module>
from CommandNotFound.db.db import SqliteDatabase
File "/usr/lib/python3/dist-packages/CommandNotFound/db/db.py", line 5, in <module>
import apt_pkg
ModuleNotFoundError: No module named 'apt_pkg'
It does that whenever I type an invalid command. This started happening after I installed Python 3.9. I am running Kubuntu with Python 3.10 installed by default.
Modern Linux distributions tend to use a lot of python scripts for internal use; for this reason python gets installed with a plethora of libraries.
The error you are getting is because you replaced that fairly complete system python with a version of your own choosing without providing all the libraries the original came with.
The error you see is emitted by /usr/lib/command-not-found, a script using python3 as found in the system path.
I strongly recommend that you re-install the original python packages and use e.g. anaconda for your specific python needs.
The main takeaway from this is:
DON'T MESS WITH THE SYSTEM PYTHON.
try to find which python are you using using which python and uninstall the first python interpreter it finds.
Related
First and foremost, I'm not a very experienced wine user.
Onto the problem. I want to run a Windows executable which in some way or another launches some sort of a python script (presumably, for authorization purposes). In this script, as evident from the error message, an import of "ssl" is present and it fails:
Traceback (most recent call last):
File "<string>", line 1, in <module>
ImportError: No module named ssl
I have found that ssl is by default bundled with python 2.6+. I have also found that installing/uninstalling any versions of python inside wine does not fix the issue. Furthermore, I can import ssl inside of wineconsole successfully and also on my linux installation with both python2 and python3.
I don't know how to solve this, but I have a guess that wine pulls python modules from somewhere else, although I haven't been able to find where from exactly and why.
I'm rather new to using python and haven't done really anything to configure python. my professor gave us an autograder.py file that checks our python code for correctness. the autograder.py file imports a file called grader.py which then imports something known as cgi (import cgi). inside this cgi file located at '/usr/lib/python2.7/cgi.py' there is a line of code that says
from operator import attrgetter
this is where the problem occurs. i recieve the following error
Traceback (most recent call last):
File "autograder.py", line 12, in <module>
import grading
File "/home/ggkfox/Documents/164-CSCI/1-Assignment/tutorial/grading.py", line 13, in <module>
import cgi
File "/usr/lib/python2.7/cgi.py", line 37, in <module>
from operator import attrgetter
ImportError: No module named operator
it is my understanding that the operator module should be built in (according to other stack overflow posts). this error only occurs when i use python2.7.12 (as opposed to python3.5). i have had a simular issue importing Tkinter in 2.7 aswell.
also i want to say that i have tried uninstalling python using:
sudo apt-get purge python2.7
but it wont even uninstall for me to even attempt to reinstall. im not using any pipenv or desktopenv.
i dont know what else to say, im very new to python coding.
It is almost a necessity to use a virtualenv for each python project.
A virtualenv creates a dedicated python environment and it saves you from a lot of 'operating system' related issues.
Here, you can find some virtualenv solutions compatible with all Python versions, along with the official python 3.6.4 documentation.
I am using Python 3.6 on Windows 7 and I have a problem with the igraph package. I was having errors while I was trying to install it using pip, so I decided to install it from the .whl file. Unfortunately, I couldn't find version appropriate for Python 3.6, so I downloaded another version and changed the name of the file so that it looked like it was designed for Python 3.6. The installation was successful, but when I am trying to run a script which uses the igraph module - a following error message appears:
Traceback (most recent call last):
File "C:/Users/Jarek/Documents/Studia/Programowanie/Python na studiach/Analysis of Unstructured Data/List2.py", line 6, in <module>
import igraph as ig
File "C:\Users\Jarek\AppData\Local\Programs\Python\Python36-32\lib\site-packages\igraph\__init__.py", line 34, in <module>
from igraph._igraph import *
ModuleNotFoundError: No module named 'igraph._igraph'
I haw a very similar issue under Python igraph import error on Windows
but there was no answer there. I have also seen
No module named 'igraph._igraph' but suggestion given there does not help me (or I do not know how to properly apply it).
Any help will be greatly appreciated. Thanks in advance.
I couldn't find version appropriate for Python 3.6, so I downloaded another version and changed the name of the file so that it looked like it was designed for Python 3.6.
So the trick didn't work. Use Python 2.6 or 2.7. Or compile from sources.
I have been messing around with Python/Panda3D and trying to get my first file to run. I am on OSX and after installing Panda3D I tried to run this file:
import direct.directbase.DirectStart
run()
That was followed by this on the Terminal output:
$ python core.py
Traceback (most recent call last):
File "core.py", line 2, in <module>
import direct.directbase.DirectStart
ImportError: No module named direct.directbase.DirectStart
I have been searching everywhere, but all the forms don't really solve the problem. Any help would be awesome!
Thanks!
This is usually a problem when you're using a version of Python other than the one Panda3D is compiled with. If you are using the 1.9.0 Lion build of Panda3D, make sure you are using the system-provided copy of Python 2.7, by explicitly running "python2.7" or "ppython" (which should be a symlink to the correct version of Python).
So i had python 2.7.2 on my server and i needed to update it to python 2.7.3. So i've tried to remove the 2.7.2 version and then install the new one using the sources. I wasn't able to remove the 2.7.2 version cause the system uses it to run crucial services on server, so i installed the 2.7.3 version in hope that after that i would be able to remove the old version. Still i cant remove the old version, although i'm able to execute the python 2.7.3 when i install any module i cant import it. I added the path to sys.path and i started finding the module but importing it causes another errors.
My python executes the /usr/local/bin/python which is the 2.7.3 version where the problems are.
If i try to execute python like this /usr/bin/python it executes the old version and everything works fine there, i can import the new installed modules.
So what can i do to make python 2.7.3 work?
I've searched a lot of tutorials and tried things like add the library in .pth files on python and i started finding the modules but when importing it i get errors like this:
>>> import numpy
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python2.7/dist-packages/numpy/__init__.py", line 137, in <module>
import add_newdocs
File "/usr/local/lib/python2.7/dist-packages/numpy/add_newdocs.py", line 9, in <module>
from numpy.lib import add_newdoc
File "/usr/local/lib/python2.7/dist-packages/numpy/lib/__init__.py", line 4, in <module>
from type_check import *
File "/usr/local/lib/python2.7/dist-packages/numpy/lib/type_check.py", line 8, in <module>
import numpy.core.numeric as _nx
File "/usr/local/lib/python2.7/dist-packages/numpy/core/__init__.py", line 5, in <module>
import multiarray
ImportError: /usr/local/lib/python2.7/dist-packages/numpy/core/multiarray.so: undefined symbol: PyUnicodeUCS4_AsUnicodeEscapeString
Thanks for the help
EDIT PROBLEM SOLvED
So to solve the missing import modules i created a .pth file under /usr/local/lib/python2.7/site-packages/ with the directories where the python modules are and the python starts to find them.
To fix the comptability problems you can install python from sources and specify the unicode doing ./configure --enable-unicode
more information here
Do not EVER mess with system python, EVER.
What you should do is install python 2.7.3 with a --prefix into your home directory, then use virtualenv -p /home/myuser/path/to/python.
In any case, using virtualenv to run your own application is almost always a good idea, as it avoids polluting the system package directories with libraries you use in your own applications.
It looks like the modules you've installed were built against your old version of Python, or at least a version incompatible with your newer installation. The import error you're seeing at the bottom is the numpy module searching for a symbol that is not in your build of 2.7.3. There is further information here.
If possible, it's usually way easier to upgrade Python with a package manager. That way, if anything on your system depends on Python, but does not need exactly 2.7.2, then Python can be easily upgraded without disturbing anything. I'm guessing that either your server doesn't have a newer version of Python available and you can't add new repositories, or you don't have access to a package manager. If using packages is possible, I would go ahead and remove what you've built from source (the command should be 'make clean' if Python uses GNU Make).
If that isn't an option, then there should be a way to compile Python, but not install it into system directories. Then you could add a symlink for users, and make sure that symlink has precedence in their path.
When installing python use the following steps
using prefix to specify the installation directory
./configure --prefix=/usr/bin/python
make
make install
Then everytime u run a new Terminal u have specify
export PATH="$PATH:/usr/bin/"
to tell where is the installation directory of Python
This way u can use any number of pythons
You can install python libs from R. It works for me.
For example, to install numpy library from R type:
system('python -m pip install -U numpy')