I can't import standard library modules (like ssl and tkinter) when I'm not running Python from "/Python3.8.10/Modules" directory:
/Python3.8.10/Modules/# python
>>> import ssl
Traceback(most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python3.8/ssl.py", line 98, in <module>
import _ssl # if we can't import it, let the error propagate
ModuleNotFoundError: No module named '_ssl'
Same error happens if I try to import "_ssl" directly.
When I'm running Python in /Python3.8.10/Modules" directory everything works fine.
What could be causing this error?
I am using Debian and I used this tutorial https://linuxhint.com/install-python-debian-10/ to install it.
Judging from your comment you didn't install Python, but just downloaded and unzipped the Source Code.
I am on Debian. I unzipped (untar-ed) Python-3.8.10.tgz (Which comes from the Python website).
If you download the tar ball directly you still have to build Python by cd-ing into the Location you extracted it to and then running:
$ ./configure --enable-optimizations
$ make -j 4
$ sudo make altinstall # altinstall will install Python3.8 at /usr/bin/Python3.8 instead of /usr/bin/Python which could overwrite previously installed versions.
$ sudo ln -s /usr/bin/python /usr/bin/python3.8 # ONLY if you want Python3.8 to be available as just python
Edit: Those are just the commands that i remembered out of my head which worked for me on various systems. They also have some requirements (build-essentials and make being two of them) so this might not work for you.
See here or probably on any site when searching for build Python from source in your favorite search engine.
Related
I followed these instructions to install the Adafruit DHT11 library (https://github.com/adafruit/Adafruit_Python_DHT):
git clone https://github.com/adafruit/Adafruit_Python_DHT.git
cd Adafruit_Python_DHT
sudo apt-get install build-essential python-dev
sudo python setup.py install
And I found the library installed under /home/pi (I'm working with a Raspberry Pi 3). The file I want to fun is in /home/pi/Desktop so I move the library into that directory. However, I still can't run my python file properly. This is the error I'm getting:
Traceback (most recent call last):
File "sensorRead.py", line 4, in <module>
import Adafruit_DHT
ImportError: No module named 'Adafruit_DHT'
How do I get rid of this error? And where should I move my file (or the library) so the library will work? Thank you.
I fixed it. I moved my file into Adafruit_Python_DHT/examples and ran it with the python sensorRead.py command. To be honest, I don't know why it works when I put it into examples, but it does.
I am having difficulty installing the ibm_db package for Python 3.4 on a 32 bit windows virtual server. I have tried easy_install, pip, and installing the pacakge manually. When I used pip install I am able to reference the package with import ibm_db, but I am not able to use it without getting the following error:
Traceback (most recent call last):
File "C:/Python34/Lib/site-packages/ibm_db-2.0.6-py3.4.egg/ibm_db.py", line 10, in <module>
__bootstrap__()
File "C:/Python34/Lib/site-packages/ibm_db-2.0.6-py3.4.egg/ibm_db.py", line 9, in __bootstrap__
imp.load_dynamic(__name__,__file__)
ImportError: DLL load failed: The application has failed to start because its side-by-side configuration is incorrect. Please see the application event log or use the command-line sxstrace.exe tool for more detail.
When I use easy_install I am unable to reference the library using import ibm_db. I was wondering if there was a simple solution to this.
How to make ibm_db work on MAC
Make sure that you has IBM DB2 EXPRESS 2 installed on your machine:
https://www.ibm.com/analytics/us/en/db2/trials/?S_CMP=ECDDWW01&S_TACT=ACDB201
To install the DB2 EXPRESS 2 extact the files into your computer and:
cd ~/Downloads/expc ; sudo ./db2_install
Make sure that you has your $HOSTNAME variable properly configured:
echo "127.0.0.1 $HOSTNAME" >>/etc/hosts
Create another user using mac gui
(System Preferences -> Users & Groups). Use Standard (Non-Admin) privileges.
Create the instance with these commands:
cd /opt/IBM/db2/V10.1/instance ; sudo ./db2icrt -u <newuser> <newuser>
Export the following variables
$ sudo -s
$ export IBM_DB_LIB=/Users/<newuser>/sqllib/lib64
$ export IBM_DB_DIR=/Users/<newuser>/sqllib
$ export ARCHFLAGS="-arch x86_64"
Intall ibm_db
pip3 install ibm_db
Try easy_install ibm_db, it worked for me on both Linux and Windows.
Similar problem has been addressed here:
https://groups.google.com/forum/#!topic/ibm_db/-HaQ48BhcfQ
Please check if that helps!
Trying to get opencv for python working on Mac OSX - Mavericks but keep getting an image not found for libjpeg.8.dylib when doing import cv from python
(Recently updated from Mountain Lion)
This is what I did:
1.brew tap homebrew/science
2.brew install opencv
3.python
4.import cv
-got the following error:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/Cellar/opencv/2.4.9/lib/python2.7/site-packages/cv.py", line 1, in <module>
from cv2.cv import *
ImportError: dlopen(/usr/local/Cellar/opencv/2.4.9/lib/python2.7/site-packages/cv2.so, 2): Library not loaded: /usr/local/lib/libjpeg.8.dylib
Referenced from: /usr/local/Cellar/opencv/2.4.9/lib/libopencv_highgui.2.4.dylib
Reason: image not found
I looked for libjpeg.8.dylib and found it in /usr/local/Cellar/jpeg/8d/lib/ which, apparently, is not where libopencv_highgui.2.4.dylib is looking.
I'm a bit new to Mac OS and homebrew. Could anyone explain how to resolve this error and get opencv running? I have the python that comes preinstalled with Mac and them python installed by homebrew.
Thank you.
The quick and dirty solution for this is to make a symlink inside of the /usr/local/lib folder pointing to the actual location of libjpeg.8.dylib, like this:
$ sudo ln -s /usr/local/Cellar/jpeg/8d/lib/libjpeg.8.dylib /usr/local/lib/libjpeg.8.dylib
The problem is opencv and python expect libjpeg.8.dylib to be in /usr/local/lib/ but homebrew installs it in /usr/local/Cellar/, hence annoying error.
I used brew a for installing OpenCV on my mac, and ran into this same problem, but it was with an Xcode C++ console application.
However an alternative method to solve the problem is to copy cp the file to the library location.
cp /usr/local/Cellar/jpeg/8d/lib/libjpeg.8.dylib /usr/local/lib/libjpeg.8.dylib
Or the latter, which I don't suggest, just stating another method is to use move mv the entire file location into your /usr/local/lib/ directory.
mv /usr/local/Cellar/jpeg/8d/lib/libjpeg.8.dylib /usr/local/lib/
Just had a similar problem to this (in python import opencv was working for me one day, then the next it threw the same error you are reporting) and this solution just worked for me:
Upgrade your homebrew opencv eg.:
brew upgrade opencv (or in my case brew upgrade opencv3)
Hope this helps
I had a similar problem with the Pillow library on macOS. The solution proposed here to install it from source worked for me. I had to install it to /usr/local/ for Pillow to find it. You'll need command-line tools, which is the purpose of the first line:
xcode-select --install
curl -O -J -L http://www.ijg.org/files/jpegsrc.v8.tar.gz
tar xvfz jpeg*tar.gz # Unzip and untar what you downloaded
cd jpeg-8 # Change directory to wherever it unpacked to
./configure --prefix="/usr/local" # Configure with the necessary prefix
make
sudo make install
Attempt to install psutils resulted a big headache...
$ python -V
Python 2.4.2
$ cat /etc/SuSE-release
SUSE Linux Enterprise Server 10 (x86_64)
VERSION = 10
PATCHLEVEL = 4
$ cd psutil-2.1.1/
$ python setup.py install
Traceback (most recent call last):
File "setup.py", line 17, in ?
from distutils.core import setup, Extension
ImportError: No module named distutils.core
Next - I try to install setuptools to use easy_install:
$ which easy_install
which: no easy_install
$ cd ../setuptools-1.4/
$ python setup.py install
Traceback (most recent call last):
File "setup.py", line 12, in ?
from distutils.util import convert_path
ImportError: No module named distutils.util
Trying install distutils from ez_setup.py:
$ python ez_setup.py
Traceback (most recent call last):
File "ez_setup.py", line 278, in ?
main(sys.argv[1:])
File "ez_setup.py", line 210, in main
egg = download_setuptools(version, delay=0)
File "ez_setup.py", line 139, in download_setuptools
from distutils import log
ImportError: No module named distutils
So - how can I install it?
P.S. No, I haven't root on this machine and can't use package manager.
you need to run this (if Error happens on python3) ==> sudo apt-get install python3-distutils --reinstall
you need to run this (if Error happens on python2) ==> sudo apt-get install python2-distutils --reinstall
I have an answer here but I will copy it here
AskUbuntu answer:
Debian has decided that distutils is not a core python package, so it is not included in the last versions of debian and debian-based OSes. You should be able to do sudo apt install python3-distutils and it should work.
However, it did not work for me. I use Parrot OS, which is, as Ubuntu, Debian based. I upgraded my system and pip stopped working for python3.7, and I also got the error ModuleNotFoundError: No module named 'distutils.util'
I tried a lot of stuff to fix it and to reinstall distutils, and I found out by pure luck, that pip3, for python3.8 did work. I then tried python3.7 -m pip3 -V, got /usr/bin/python3.7: No module named pip3 so I decided to have a look in the /usr/lib files.
I looked at /usr/lib/python3/dist-packages and everything looked fine. Then I looked at /usr/lib/python3.7 and saw the folder distutil.
I opened it, and saw the __pycache__, the __init__.py file and a version.py file. I had no idea how many files should be in there, or what the code should be, but I knew that those two files were either wrong or missing another file.
Then I had a look at what was inside /usr/lib/python3.8/distutil and it was totally different. I found the following files:
command Folder
__pycache__ Folder
archive_util.py Python script
bcppcompiler.py Python script
cmd.py Python script
config.py Python script
core.py Python script
cygwinccompiler.py Python script
debug.py Python script
dep_util.py Python script
errors.py Python script
extension.py Python script
fancy_getopt.py Python script
filelist.py Python script
file_util.py Python script
__init__.py Python script
log.py Python script
msvc9compiler.py Python script
_msvccompiler.py Python script
msvccompiler.py Python script
README Plain text file
spawn.py Python script
sysconfig.py Python script
text_file.py Python script
unixccompiler.py Python script
util.py Python script
version.py Python script
versionpredicate.py Python script
This was a lot more promising, and since pip3 did work, I assumed that this distutils worked too, and I tried to copy it to the python3.7 folder by running this command:
sudo cp -r /usr/lib/python3.8/distutil /usr/lib/python3.7/distutil
Then I tried again python3.7 -m pip -V and got
pip 20.0.2 from /usr/lib/python3/dist-packages/pip (python 3.7)
Then I tried installing some modules and everything works fine.
I hope this is helpful.
#ciro
I need to do even more to get virtualenv running again (upgraded from 18.04 to 20.04):
sudo cp /usr/lib/python3.8/_sysconfigdata__* /usr/lib/python3.6/
cd /usr/lib/python3.6
sudo ln -s _sysconfigdata_m_linux_x86_64-linux-gnu.py _sysconfigdata_m_x86_64-linux-gnu.py
There might be other questions similar to this but, in my particular case, I don't have super user (sudo) access to the machine and I have locally installed Python 2.7.
>>> import sqlite3
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/spicmacay/.local/lib/python2.7/sqlite3/__init__.py", line 24, in <module>
from dbapi2 import *
File "/home/spicmacay/.local/lib/python2.7/sqlite3/dbapi2.py", line 27, in <module>
from _sqlite3 import *
ImportError: No module named _sqlite3
>>>
UPDATE: When I run ./configure&& make, I get:
make
running build
running build_ext
building dbm using gdbm
INFO: Can't locate Tcl/Tk libs and/or headers
Python build finished, but the necessary bits to build these modules were not found:
_sqlite3 _tkinter bsddb185
dl imageop sunaudiodev
To find the necessary bits, look in setup.py in detect_modules() for the module's name.
running build_scripts
Came to this issue also.. fixed by compiling Python and passing sqlite3 headers/libs during ./configure
Python 2.7.3 _sqlite3 module is not being built after passing headers/libraries
Posted just in case anyone else has this issue in the future and does not have sudo access to a node.
This happened me recently. You need to apt-get install libsqlite3-dev (on debian - sqlite-devel possibly elsewhere) and recompile python.
If you first ./configure sqlite3 with a --prefix option, then make and make install it and then use the same --prefix when compiling Python, the Python installation will be able to magically find and use the sqlite3 you just installed.
cd sqlite-autoconf-3080100
./configure --prefix=/home/xdanek7/appscale/local
make
make install
cd ../Python-2.7.6
./configure --prefix=/home/xdanek7/appscale/local
make
make install
Try adding sudo before the command apt-get install libsqlite3-dev to get rid of "NO root access"
i.e on terminal, write:
sudo apt-get install libsqlite3-dev