I want to use informixdb 2.5 which is an DB-API 2.0 compliant module in a python 3 environment. My computer has both python 2.6 and python 3.6 installed. I have created a new virtualenv for my code.
I have used pip install for informixdb in the 2.6 environment and tested it and everything works tickety-boo.
I cannot work out how to reference the 2.6 version of the module in my 3.5 virtualenv.
I tried to use pip-install to just load it into the 3.5 environment but that fails ( it has the code "(34*3600L)" in it so clearly is not python 3 compatible).
I downloaded the source from sourceforge and tried to compile it but that also failed (errors locating the correct python headers).
I'm struggling. Does anyone know if :
a) there is python 3 version of the module (and where)
or
b) Is this possible (and how)
or
c) am I completely barking mad and there is a better solution to accessing an informix database rather than through this module (I thought of using pyodbc, but thought if there is a specific module it would be better than using a generic odbc function).
Many thanks,
If I understood you correctly you are trying to use this library:
informixdb 2.5
This library is old and does not support python3.
If you need to work in python3 with IBM Informix db you can try another library called python-ibmdb available from here: python-ibmdb
Hope this helps.
you may try using PythonIfxDB (https://github.com/ifxdb/PythonIfxDB).
Should compile and 'work' with both 2.6 and 3.5
If the module is available for both versions, then you need to install the module for python3 using python3-pip
sudo apt-get install python3-pip
Then install the modules with python3-pip install module_name
I have seen lots of similar questions on stackoverflow, but while all of them advice switching to other packages that support python 3.
The issue is following: the project that I have to run on python3 uses mysql package, which appears to be a "virtual package" (whatever that means) and actually installs MySQL-python package, which is not an easy task - if at all possible.
So, is there a way to install MySQL-python on python3?
No, but if you're looking to interface with mysql in python 3, just use mysqlclient. Its a pure python interface to mysql, and I use it myself in production. Libraries like sqlalchemy also support it.
I will try to port my Python 2.7 with Django to Python 3. But now my question is what version is the most stable one today? I've heard people use 3.2 and 3.4 and recommend it. But now I'm asking you guys.
What version is the most stable one today?
If you go to their downloads page, you will find the following statement (my emphasis):
We recommend using the latest version of Python 3 [...]
I've been using Python 3.4.3+ in a Django 1.8.2 project without issues and I don't see why you should run into problems here.
However, if you do run into issues, you should file a bug.
What version is the most stable one today?
Whatever version shows up as the recommended download in the python homepage should be considered stable. If that happens to be v3.5, then you should use that.
Python's version are quite stable, but you have to check is virtualenv on your OS is handled already by particular Python's version eg. 3.5.0 is not yet prepared for it. I recommend you 3.4.x, which I use on my own without any problems.
You may check for 'What Python version can I use with Django?' in official documentation here and here faq which lists which Python version is supported to which Django version
I'm calling on psycopg2 with
import psycopg2
I get the std error
ImportError: No module named psycopg2
I installed my copy with macports, so I'm curious why it wouldn't work because all of the dependencies should be downloaded as well.
I don't have any experience with Postgresql, nor this module, so I don't know what could be going wrong. Fact is, another project I'm trying to get built calls upon it, so if I could avoid using this I would. :)
I'm sure that postgresql is installed, but that has little to do with the fact that my installation can't find psycopg2. Any suggestinos would be appreciated.
$ which python
reveals
/Library/Frameworks/Python.framework/Versions/Current/bin/python
and
$ python --version
reveals
Python 2.7.3 -- EPD_free 7.3-2 (32-bit)
I don't necessarily want the version of EPD_free, but I had to install it for (somewhat) unrelated reasons.
MacPorts installs its own version of Python alongside Apple's version. You can manage the active version of Python (the one that gets run when you type in python at the command line or by /usr/bin/env) by using the port select command. See this question.
I am finding it difficult to use MySQL with Python in my windows system.
I am currently using Python 2.6. I have tried to compile MySQL-python-1.2.3b1 (which is supposed to work for Python 2.6 ?) source code using the provided setup scripts. The setup script runs and it doesn't report any error but it doesn't generate _mysql module.
I have also tried setting up MySQL for Python 2.5 with out success. The problem with using 2.5 is that Python 2.5 is compiled with visual studio 2003 (I installed it using the provided binaries). I have visual studio 2005 on my windows system. Hence setuptools fails to generate _mysql module.
Any help ?
Download page for python-mysqldb. The page includes binaries for 32 and 64 bit versions of for Python 2.5, 2.6 and 2.7.
There's also discussion on getting rid of the deprecation warning.
UPDATE: This is an old answer. Currently, I would recommend using PyMySQL. It's pure python, so it supports all OSes equally, it's almost a drop-in replacement for mysqldb, and it also works with python 3. The best way to install it is using pip. You can install it from here (more instructions here), and then run:
pip install pymysql
This may read like your grandpa givin advice, but all answers here did not mention the best way: go nd install ActivePython instead of python.org windows binaries. I was really wondering for a long time why Python development on windows was such a pita - until I installed activestate python. I am not affiliated with them. It is just the plain truth. Write it on every wall: Python development on Windows = ActiveState!
you then just pypm install mysql-python and everything works smoothly. no compile orgy. no strange errors. no terror. Just start coding and doing real work after five minutes.
This is the only way to go on windows. Really.
As Python newbie learning the Python ecosystem I've just completed this.
Install setuptools instructions
Install MySQL 5.1. Download the 97.6MB MSI from here You can't use the essentials version because it doesnt contain the C libraries.
Be sure to select a custom install, and mark the development tools / libraries for installation as that is not done by default. This is needed to get the C header files.
You can verify you have done this correctly by looking in your install directory for a folder named "include". E.G C:\Program Files\MySQL\MySQL Server 5.1\include. It should have a whole bunch of .h files.
Install Microsoft Visual Studio C++ Express 2008 from here This is needed to get a C compiler.
Open up a command line as administrator (right click on the Cmd shortcut and then "run as administrator". Be sure to open a fresh window after you have installed those things or your path won't be updated and the install will still fail.
From the command prompt:
easy_install -b C:\temp\sometempdir mysql-python
That will fail - which is OK.
Now open site.cfg in your temp directory C:\temp\sometempdir and edit the "registry_key" setting to:
registry_key = SOFTWARE\MySQL AB\MySQL Server 5.1
now CD into your temp dir and:
python setup.py clean
python setup.py install
You should be ready to rock!
Here is a super simple script to start off learning the Python DB API for you - if you need it.
I found a location were one person had successfully built mysql for python2.6, sharing the link, http://www.technicalbard.com/files/MySQL-python-1.2.2.win32-py2.6.exe
...you might see a warning while import MySQLdb which is fine and that won’t hurt anything,
C:\Python26\lib\site-packages\MySQLdb__init__.py:34: DeprecationWarning: the sets module is deprecated
from sets import ImmutableSet
What about pymysql? It's pure Python, and I've used it on Windows with considerable success, bypassing the difficulties of compiling and installing mysql-python.
You're not the only person having problems with Python 2.6 and MySQL (http://blog.contriving.net/2009/03/04/using-python-26-mysql-on-windows-is-nearly-impossible/). Here's an explanation how it should run under Python 2.5 http://i.justrealized.com/2008/04/08/how-to-install-python-and-django-in-windows-vista/
Good luck
The precompiled binaries on http://www.lfd.uci.edu/~gohlke/pythonlibs/#mysql-python is just worked for me.
Open MySQL_python-1.2.5-cp27-none-win_amd64.whl file with zip
extractor program.
Copy the contents to
C:\Python27\Lib\site-packages\
On Python 3.4 I've installed mysqlclient from http://www.lfd.uci.edu/~gohlke/pythonlibs/ with pip install mysqlclient and it's working.
You can try to use myPySQL. It's really easy to use; no compilation for windows, and even if you need to compile it for any reason, you only need Python and Visual C installed (not mysql).
http://code.google.com/p/mypysql/
Good luck
There are Windows binaries for MySQL-Python (2.4 & 2.5) available on Sourceforge. Have you tried those?
Because I am running python in a (pylons/pyramid) virtualenv, I could not run the binary installers (helpfully) linked to previously.
I had problems following the steps with Willie's answer, but I determined that the problem is (probably) that I am running windows 7 x64 install, which puts the registry key for mysql in a slightly different location, specifically in my case (note: I am running version 5.5) in: "HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\MySQL AB\MySQL Server 5.5".
HOWEVER, "HKEY_LOCAL_MACHINE\" cannot be included in the path or it will fail.
Also, I had to do a restart between steps 3 and 4.
After working through all of this, IMO it would have been smarter to run the entire python dev environment from cygwin.
If you are looking for Python 3.2 this seems the best solution I found so far
for Python 2.4 - 3.2 PyMySQL
for Python 2.3 - 2.6 MySQL for Python
Source: http://wiki.python.org/moin/MySQL
You might want to also consider making use of Cygwin, it has mysql python libraries in the repository.
You can also use pyodbc with the MySQL Connector/ODBC to use MySQL on Windows. Unixodbc is also available to make the code compatible on Linux. Pyodbc uses the standard Python DB API 2.0 so if you stick with that switching between MySQL/PostgreSQL/SQLite/ODBC/JDBC drivers etc. should be relatively painless.
upvoted itsadok's answer because it led me to the installation for python 2.7 as well, which is located here: http://www.codegood.com/archives/129
Got sick of the installation troubles with MySQLdb and tried pymysql instead.
Easy setup;
git clone https://github.com/petehunt/PyMySQL.git
python setup.py install
And APIs are pretty much the same.