I'm using Django and Python 2.6, and I want to grow my application using a MySQL backend. Problem is that there isn't a win32 package for MySQLdb on Python 2.6.
Now I'm no hacker, but I thought I might compile it myself using MSVC++9 Express. But I run into a problem that the compiler quickly can't find config_win.h, which I assume is a header file for MySQL so that the MySQLdb package can know what calls it can make into MySQL.
Am I right? And if so, where do I get the header files for MySQL?
Thanks all! I found that I hadn't installed the developer components in MySQL. Once that was done the problem was solved and I easily compiled the MySQLdb for Python 2.6.
I've made the package available at my site.
I think that the header files are shipped with MySQL, just make sure you check the appropriate options when installing (I think that sources and headers are under "developer components" in the installation dialog).
Have you considered using a pre-built stack with Python, MySQL, Apache, etc.?
For example: http://bitnami.org/stack/djangostack
Also see this post on the mysql-python blog: MySQL-python-1.2.3 beta 2 released - dated March 2009. MySQLdb for Python 2.6 is still a work in progress...
Related
I have installed SQL Server 2017 with Python but it came with Python 3.5.2 and Anaconda 4.2.0. Is there a way to upgrade the Python to 3.7?
This is the only official document I found and tried
https://learn.microsoft.com/en-us/sql/advanced-analytics/r/use-sqlbindr-exe-to-upgrade-an-instance-of-sql-server?view=sql-server-2017 but even this installed 3.5
Please help.
Thanks,
Avinash
It may be easiest to open https://www.python.org/downloads/ and install the latest release. If you have Visual Studio 2017/2019, open the solution explorer, open your python project (or import a new one into a Python Application) and point your application to this latest version. Either way, the latest version will exist on the machine. Note that some versions may be 32 bit and not 64 bit.
PyCharm Community Edition is another option.
this may help. a brief scan of it looks like there is a package created just for this purpose, dating python version and packages on SQL server machines:
https://learn.microsoft.com/en-us/sql/machine-learning/package-management/install-additional-python-packages-on-sql-server?view=sql-server-ver15
I am using pyodbc with Python 3.7. I am running an older version of SQL-Server, but it should work on your version too.
So just install Python 3.7, import pyodbc, set the "driver" specifically to a SQL Server client and you are good to go.
pyodbc is a very nice thing, but the Windows installers only work with their very specific python version. With the release of Python 3.4, the only available installers just stop once they don't see 3.3 in the registry (though 3.4 is certainly there).
Copying the .pyd and .egg-info files from a 3.3 installation into the 3.4 site-packages directory doesn't seem to do the trick. When importing pyodbc, an ImportError is thrown: ImportError: DLL load failed: %1 is not a valid Win32 application.
Is there a secret sauce that can be added to make the 3.3 file work correctly? Or do we just need to wait for a 3.4 installer version?
The different versions of Python are (for the most part) not binary-compatible, and thus any compiled extensions (such as pyodbc) will only work for a specific version.
Note that pure-Python packages (the ones that are completely written in Python, and have no non-Python dependencies) do not need to be compiled, and thus can be written to support multiple Python versions.
Also note that it is technically possible for a compiled extension to be written such that it works for Python 3.2 as well as 3.3, 3.4, and the future 3.x's to come, but they have to limit themselves to the "stable ABI" as specified by PEP 384, and most extensions do not do this. As far as I know, pyodbc is not limited to the stable ABI and must be compiled separately for each Python version.
That said, it is also possible to compile your own version of pyodbc from source, as long as you have the required tools and expertise. (But I'm guessing if you're asking this question, you don't. I don't either, otherwise I'd include some tips in this answer.)
As you have already commented, pypyodbc may be your best bet, as it is a pure-Python package.
Installing pypyodbc can be done via the commandline:
C:\Python34\Scripts>pip install pypyodbc
Using it as drop-in replacement of pyodbc can be done using:
import pypyodbc as pyodbc
[The current version of pyodbc at the time of this edit is 3.0.10, and it does support Python 3.4. Of course, it's still useful to be aware of pypyodbc in case pyodbc falls behind again when future versions of Python are released.]
Did you try to download from here? It has an unofficial build for 3.4. I did a quick test myself, looks like it's working fine for me.
I fixed this by installing pyodbc 3.0.10. The latest version of pyodbc didn't work on Windows with Python 3.4
However pyodbc 3.0.10 did work for me
Install command on command prompt : pip install pyodbc 3.0.10
I am trying to enable PL/Python2 in my postgresql database. My setup is as follows
windows 7 64-bit
postgresql 9.2 64-bit
In the \lib folder i have plpython3.dll but no plpython2.dll which I need as a function I need to use was written in Python2.
I found a plpython2.dll on another forum but it was a 32-bit version (I used dependency walker to test what the dll required)
I have since tried postgresql 9.0 which only has plpython.dll (which when I follow these instructions Postgres database crash when installing plpython) and then I thried postgresql 9.1 and the plpython3.dll appeared.
In the documentation it states that "Users of binary packages might find PL/Python in a separate subpackage." But I cannot find any anywhere.
I have the correct Python in my PATH environment variable and have even copied the python26.dll into the \lib folder.
Does anyone know where I can find the plpython2.dll?
thanks
There is extensive discussion at http://forums.enterprisedb.com/posts/list/2878.page
I am not sure I would try the unverified DLL download attached to one post, and certainly not on a production server. My sense from reading the link is that pl/python2 is NOT SUPPORTED on Windows PostgreSQL 9.x because these are built against Python 3.x
I could be missing something however.
What was the first version of Python that included SQLite?
What version of SQLite was included?
I thought Python 2.5 was the first version to include SQLite, but I was hoping someone could confirm that and the version of SQLite that was first included.
From the docs:
11.13. sqlite3 — DB-API 2.0 interface for SQLite databases
New in version 2.5.
As others have noted, a snapshot of the pysqlite2 was merged into the Python standard library and released as the sqlite3 module in Python 2.5. There has been subsequent independent development on pysqlite2 which has been merged back into sqlite3 at various points for subsequent Python releases and sqlite3 has received its own bug fixes.
There is no one correct answer to the question of which version of SQLite was included because the Python source code distribution does not include the source for SQLite. The build process, for Unix-style builds, depends on an externally provided copy of the library. It is up to each distributor of Python to decide how to manage that. For instance, the current python.org installer 32-bit-only variants for Mac OS X statically includes a version of the SQLite library while the 64-bit variant for 10.6 dynamically links to the system-supplied version of the library. So, to answer your second question, you would need to check each distribution of Python 2.5 and determine what version(s) of SQLite each was statically or dynamically linked with.
It was first included in python version 2.5.
The version of sqlite was 3.0.8, based off of the pysqlite2.1.3 library.
Found here: http://www.python.org/download/releases/2.5/NEWS.txt (search for "sql").
From here, Version 2.5 alpha 1
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.