Getting started with python on macintosh snow leopard with mysql -need help

D

dk

I have been going round and round trying to configure python 2.6
running on osx 10.6.x to work with mySQL 5.1.44.
Python seems to work ... i have an installation of mysql 5.1.44
running and have used it in conjunction for other php/apache projects.

I want to learn python and think i need a better database then mysql
lite that installs with the web2py frame work, so my quest to connect
to mysql or postgres began.

I seem to be stuck stuck getting mySQLdb drivers installed. I down
loaded python 2.6.5 from the python site and MySQL-python-1.2.3 from
the my sql site.
I have worked past numerous errors by i now get the errors below when
i try to compile.

-- some background that might help anyone kind enough to have read
this far and who might be inclined to take pitty --
I have (tried) to use macports to install setuptools (which MySQL-
python-1.2.3 says it needs).
MacPorts has put tons of stuff in /opt/local ... so i am not sure i am
using this tool the way its intended.
this could all be as simple as adding some path declarations in the
right place but where?

lots of the post i have seen on the subject talk about 32/64
installation ... it makes sense that you might need to be consistent
in getting your components to work together, but i am not sure how i
tell of the various parts i have install which and how they were
compiled.

whereis python display /usr/bin/python
python -v spits out lots ... but here is a sample:

# /Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/
encodings/utf_8.pyc matches /Library/Frameworks/Python.framework/
Versions/2.6/lib/python2.6/encodings/utf_8.py
import encodings.utf_8 # precompiled from /Library/Frameworks/
Python.framework/Versions/2.6/lib/python2.6/encodings/utf_8.pyc
Python 2.6.5 (r265:79359, Mar 24 2010, 01:32:55)
[GCC 4.0.1 (Apple Inc. build 5493)] on darwin





when i try to compile mysql-python-1.2.3 i get the following error
returned from python setup.py build -----

building '_mysql' extension
gcc-4.0 -isysroot /Developer/SDKs/MacOSX10.4u.sdk -fno-strict-aliasing
-fno-common -dynamic -DNDEBUG -g -O3 -Dversion_info=(1,2,3,'final',0) -
D__version__=1.2.3 -I/usr/local/mysql/include -I/Library/Frameworks/
Python.framework/Versions/2.6/include/python2.6 -c _mysql.c -o build/
temp.macosx-10.3-fat-2.6/_mysql.o -g -Os -arch x86_64 -fno-common -
D_P1003_1B_VISIBLE -DSIGNAL_WITH_VIO_CLOSE -DSIGNALS_DONT_BREAK_READ -
DIGNORE_SIGHUP_SIGQUIT -DDONT_DECLARE_CXA_PURE_VIRTUAL
In file included from /Library/Frameworks/Python.framework/Versions/
2.6/include/python2.6/unicodeobject.h:4,
from /Library/Frameworks/Python.framework/Versions/
2.6/include/python2.6/Python.h:85,
from pymemcompat.h:10,
from _mysql.c:29:
/Developer/SDKs/MacOSX10.4u.sdk/usr/include/stdarg.h:4:25: error:
stdarg.h: No such file or directory
In file included from _mysql.c:36:
/usr/local/mysql/include/my_config.h:1053:1: warning: "HAVE_WCSCOLL"
redefined
In file included from /Library/Frameworks/Python.framework/Versions/
2.6/include/python2.6/Python.h:8,
from pymemcompat.h:10,
from _mysql.c:29:
/Library/Frameworks/Python.framework/Versions/2.6/include/python2.6/
pyconfig.h:808:1: warning: this is the location of the previous
definition
error: command 'gcc-4.0' failed with exit status 1
 
B

Benjamin Kaplan

I have been going round and round trying to configure python 2.6
running on osx 10.6.x to work with mySQL 5.1.44.
Python seems to work ... i have an installation of mysql 5.1.44
running and have used it in conjunction for other php/apache projects.

I want to learn python and think i need a better database then mysql
lite that installs with the web2py frame work, so my quest to connect
to mysql or postgres began.

I seem to be stuck stuck getting mySQLdb drivers installed.  I down
loaded python 2.6.5 from the python site and MySQL-python-1.2.3 from
the my sql site.
I have worked past numerous errors by i now get the errors below when
i try to compile.

-- some background that might help anyone kind enough to have read
this far and who might be inclined to take pitty --
I have (tried) to use macports to install setuptools (which MySQL-
python-1.2.3 says it needs).
MacPorts has put tons of stuff in /opt/local ... so i am not sure i am
using this tool the way its intended.
this could all be as simple as adding some path declarations in the
right place but where?

That could be part of your problem. Macports basically ignores the
rest of the system. Setuptools depends on python, so Macports compiles
and installs its own version of Python in /opt/local. So you now have
3 different versions of Python 2.6 on your computer: /usr/bin/python
(the System python), /usr/local/bin/python (the Python.org python) and
/opt/local/Library/Frameworks/Python.Framework/Versions/2.6/bin/python.
You can use Macport's python-select package to choose which one is the
default (it symlinks one of them to /opt/local/bin/python which should
be first on your path).

Anyway, as long as you're using Macports :

sudo port install py26-mysql

that should solve most of your problems :)
lots of the post i have seen on the subject talk about 32/64
installation ... it makes sense that you might need to be consistent
in getting your components to work together, but i am not sure how i
tell of the various parts i have install which and how they were
compiled.

whereis python  display  /usr/bin/python
python -v spits out lots ... but here is a sample:

# /Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/
encodings/utf_8.pyc matches /Library/Frameworks/Python.framework/
Versions/2.6/lib/python2.6/encodings/utf_8.py
import encodings.utf_8 # precompiled from /Library/Frameworks/
Python.framework/Versions/2.6/lib/python2.6/encodings/utf_8.pyc
Python 2.6.5 (r265:79359, Mar 24 2010, 01:32:55)
[GCC 4.0.1 (Apple Inc. build 5493)] on darwin





when i try to compile mysql-python-1.2.3 i get the following error
returned from python setup.py build -----

building '_mysql' extension
gcc-4.0 -isysroot /Developer/SDKs/MacOSX10.4u.sdk -fno-strict-aliasing
-fno-common -dynamic -DNDEBUG -g -O3 -Dversion_info=(1,2,3,'final',0) -
D__version__=1.2.3 -I/usr/local/mysql/include -I/Library/Frameworks/
Python.framework/Versions/2.6/include/python2.6 -c _mysql.c -o build/
temp.macosx-10.3-fat-2.6/_mysql.o -g -Os -arch x86_64 -fno-common -
D_P1003_1B_VISIBLE -DSIGNAL_WITH_VIO_CLOSE -DSIGNALS_DONT_BREAK_READ -
DIGNORE_SIGHUP_SIGQUIT -DDONT_DECLARE_CXA_PURE_VIRTUAL
In file included from /Library/Frameworks/Python.framework/Versions/
2.6/include/python2.6/unicodeobject.h:4,
                from /Library/Frameworks/Python.framework/Versions/
2.6/include/python2.6/Python.h:85,
                from pymemcompat.h:10,
                from _mysql.c:29:
/Developer/SDKs/MacOSX10.4u.sdk/usr/include/stdarg.h:4:25: error:
stdarg.h: No such file or directory
In file included from _mysql.c:36:
/usr/local/mysql/include/my_config.h:1053:1: warning: "HAVE_WCSCOLL"
redefined
In file included from /Library/Frameworks/Python.framework/Versions/
2.6/include/python2.6/Python.h:8,
                from pymemcompat.h:10,
                from _mysql.c:29:
/Library/Frameworks/Python.framework/Versions/2.6/include/python2.6/
pyconfig.h:808:1: warning: this is the location of the previous
definition
error: command 'gcc-4.0' failed with exit status 1
--

Strange. Seems that the package is trying to use gcc-4.0 and the
MacOSX10.4 SDK. The default version of gcc on Snow Leopard is 4.2, and
XCode only comes with the SDKs for the previous two versions of OS X.
 
N

Ned Deily

Benjamin Kaplan said:
Strange. Seems that the package is trying to use gcc-4.0 and the
MacOSX10.4 SDK. The default version of gcc on Snow Leopard is 4.2, and
XCode only comes with the SDKs for the previous two versions of OS X.

Not strange at all. The python.org Python 2.6 (which is installed to
/Library/Frameworks/Python.framework) is deliberately built to be
compatible with OS X 10.3.9 through 10.6 and, as such, requires gcc-4.0
and the 10.4u SDK. The latter is included in the 10.6 Xcode
distribution as a separate package but is not installed by default; to
build a Python C extension module for that Python, you need to go back
to the Xcode installer for Snow Leopard (or download a new one from
Apple) and do a custom installation of that SDK.
 

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