I'm new bie to Python who is stucked in the need of recompilation of Python.
I have server with Centos where I have installed Python3.6 and then scrapyd. Everything installed successfully, however when I try to run scrapyd command, it shows me below error:
After search a while, I got to know that sqlite3 should be installed even before Python3.6, however I have installed sqlite3 now but now found that I need recompile the Python.
So, Above is the situation, now I have a question that, is that the case where I needed to install sqlite3 and recompile the Python? If yes then how I can recompile Python? If no then how can I get rid of this issue and can start the scrapyd?
Help is really appreciable.
I believe, you'll need to re-install the python version as per this as actually the sqlite3 is the extension which should be install before Python gets installed.
Please check this -
How to import sqlite3 in my python3.4 successfully?
Related
I have installed Cassandra database on my CentOs system. after that, I tried to install the Cqlsh package using this command sudo yum install cqlsh and it has been installed successfully. but when I tried to run cqlsh from the terminal, the following error appears:
ImportError: cannot import name ensure_str
somewhere in the code, it tries to load a library named six that contains ensure_str. the error does not say that it can not find a module named six, the python interpreter can find the library but can not import it!
I have tried googling but none of the solutions worked for me.
after a few hours of googling and struggling with the code, finally, I find out the solution. and I'm going to share it with others.
apparently, the problem is the new version of six (v=1.7.3) which is not compatible with my system. However, Cassandra copies the last version of six into the following path:
/usr/share/cassandra/lib/six-1.7.3-py2.py3-none-any.zip
then cqlsh try to force the python interpreter to import the library from this path by adding the following lines to the code.
third_parties = ('futures-', 'six-', 'geomet-')
for lib in third_parties:
lib_zip = find_zip(lib)
if lib_zip:
sys.path.insert(0, lib_zip)
no matter if you have another version of six installed on your system, it always tries to import the library from the Cassandra folder.
So, I have just deleted these lines from cqlsh file using this command:
vim /usr/bin/cqlsh
Then I try to install the last compatible version on six using this command:
yum install six
That's it! problem solved and now I'm using cqlsh without any problem.
I hope it helps others.
We've had reports of this being a problem on CentOS specifically with version 6.7 but it possibly affects the 7.x releases too.
It appears that the wrong Python is getting called. This isn't strictly a Cassandra issue but a problem with the Python on the machine. You can verify which Python gets run with:
$ which python
As a workaround, you should be able to run cqlsh using the system Python as follows:
$ /usr/local/bin/python /usr/bin/cqlsh
Cheers!
Use pip3 to install or upgrade to the current six.
Edit a copy of cqlsh. Change
third_parties = ('futures-', 'six-', 'geomet-')
to
third_parties = ('futures-', 'geomet-')
Not proud, but it worked.
Used pip3 to install, and found this issue as well.
For me, removing six dependencies from /usr/lib/python3/dist-packages was the only thing that worked.
rm six-1.11.0.egg-info and rm -r six-1.11.0.egg-info
I couldn't uninstall it with pip3, so manual removal was the way to go, followed by a pip3 install six
Once that was back in place, cqlsh ran without issue.
The previous answers didn't work for me, I had to delete the Cassandra included six package, and then cqlsh used the system-wide package.
mv /usr/share/cassandra/lib/six-1.7.3-py2.py3-none-any.zip /usr/share/cassandra/lib/six-1.7.3-py2.py3-none-any.zip.bak
Maybe an older version of Cassandra installed, and a newer version of cqlsh?
https://community.datastax.com/questions/12085/unable-to-connect-to-cqlsh.html
Sorry if I will sound really dumb but I get an error while trying to install python 3.5.2 modules using pip. The whole error screen is the following:
The same thing happens when I try to update pip and as far as I understand pip comes by default with python 3.5. What I am missing or is there a simpler way to get modules to work?
Running windows 10
Also I am new to python
Do you have administrator privileges? Looks like you don't have privileges to access files
I created my own python module and packaged it with distutils. Now I installed it on a new system (python setup.py install) and I'm trying to call it from a plpython3u function, but I get an error saying the module does not exist.
It was working on a previous Ubuntu instalation, and I'm not sure what I did wrong when setting up my new system.
I'm trying this on a Ubuntu 15.10 pc with postgresql 9.5, everything freshly installed. I'm also trying this setup in a docker image built with the same componentes (ubuntu 15.10 and pg 9.5). I get the same error in both setups.
Could you please hint me about why this is failing? I wrote down my installation instructions for both systems (native and docker), so I can provide them if that helps.
Thanks
Sorry guys I think I found the problem. I'm using plpython3 in my stored procedure, but intalled my custom module using python 2. I just did sudo python3 setup.py install and now it's working on the native Ubuntu. I'll now try modifying my docker image and see if it works there too.
Thanks
When I try to do python manage.py syncdb in my Django app, I get the error ImportError: No module named azure.storage.blob. But thing is, the following packages are installed if one does pip freeze:
azure-common==1.0.0
azure-mgmt==0.20.1
azure-mgmt-common==0.20.0
azure-mgmt-compute==0.20.0
azure-mgmt-network==0.20.1
azure-mgmt-nspkg==1.0.0
azure-mgmt-resource==0.20.1
azure-mgmt-storage==0.20.0
azure-nspkg==1.0.0
azure-servicebus==0.20.1
azure-servicemanagement-legacy==0.20.1
azure-storage==0.20.3
Clearly azure-storage is installed, as is evident. Why is azure.storage.blob not available for import? I even went into my .virtualenvs directory, and got in all the way to azure.storage.blob (i.e. ~/.virtualenvs/myvirtualenv/local/lib/python2.7/site-packages/azure/storage/blob$). It exists!
What do I do? This answer here has not helped: Install Azure Python api on linux: importError: No module named storage.blob
Note: please ask for more information in case you need it
I had a similar issue. To alleviate that, I followed this discussion here: https://github.com/Azure/azure-storage-python/issues/51#issuecomment-148151993
Basically, try pip install azure==0.11.1 before trying syncdb, and I'm confident it will work for you!
There is a thread similar with yours, please check my answer for the thread Unable to use azure SDK in Python.
Based on my experience, Python imports the third-party library packages from some library paths that you can check them thru codes import sys & sys.path in the python interpreter. So you can try to dynamically add the new path contains the installed azure packages into the sys.path in the Python runtime to solve the issue. For adding the new library path, you just code sys.path.append('<the new paths you want to add>') at the front of the code like import azure.
If the way has not helped, I suggest you can try to reinstall Python environment. On Ubuntu, you can use the command sudo apt-get remove python python-pip & sudo apt-get install python python-pip to reinstall Python 2.7 & pip 2.7.(Note: The current major Linux distributions use Python 2.7 as the system default version.)
If Python 3.4 as your runtime for Django, the apt package names for Ubuntu are python3 and python3-pip, and you can use sudo pip3 install azure for Python 3.4 on Ubuntu.
Any concern, please feel free to let me know.
Where can I download _winreg for python3 if I can at all. I have my 'windir' on E:\Windows. I do not know if cx_Freeze did not notice that. I am using cx_Freeze to create an msi installer.
As it says in the _winreg documentation, it has been renamed to winreg in Python 3.0. You should run the 2to3 tool if you're converting code that was written for Python 2.x.
I know this is an old question, but this was the first search result when Googling for ModuleNotFoundError: No module named '_winreg', and perhaps may be helpful for someone.
I got the same error when trying to use a virtual environment folder, which has been created using different (already deleted) python binaries. The solution was recreate the virtual environment:
Delete the virtual environment folder
Run python -m venv <name_of_virtual_environment>
I have found an easy solution for this, Even though i found it after a lot of Rnd, the solution implementation is so simple and straight forward. Hope it can help many people with the same problem.
If you dont have the latest version of Python installed on your machine, You need to download it from (https://www.python.org/downloads/) and then click on Add to path option and just finish the installer.
Please open CMD and move to the python latest version directory, then run the pip install package name (e.g) pip install pygame and it will be successful
1. C:\WINDOWS\system32>cd C:\Users\admin\AppData\Local\Programs\Python\Python37-32
2. C:\Users\admin\AppData\Local\Programs\Python\Python37-32>pip install Pygame
It will install the packages now without any issues.
Downloading
Successfully installed Pygame-1.9.4
C:\Users\admin\AppData\Local\Programs\Python\Python37-32>
If you are still facing issues in Pycharm after trying the above solution, please try the following steps too.
Create new virtual Environment from settings menu and select the latest version of python framework as Project Interpreter and give a new folder path.
select the pip package you want to import. Recompile the code and the error will clear.
Hope this helps.
When you encounter an error like module of simpleai not found,
use
pip install simpleai
in the prompt and then execute. It will get installed.