如何在 Mac OS X 上安装 MySQLdb (Python 数据访问库到 MySQL) ？

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Install mysql and python via Macports The porters have done all the difficult work.

sudo port install py26-mysql
sudo port install mysql5-server

should install what you need. (see Stack overflow for comments re mysql server)

If you only need to connect to mysql and not run a server then the first line is sufficient.

Macports now (early 2013) will provide binary downloads for common combinations of OS a executable architecture, for others (and if you request it) it will build from source.

In general macports (or fink) help when there are complex libraries etc that need to be installed.

Python only code and if simple C dependencies can be set up via setuptools etc, but it begins to get complex if you mix the two.

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Update for those using Python3: You can simply use conda install mysqlclient to install the libraries required to use MySQLdb as it currently exists. The following SO question was a helpful clue: Python 3 ImportError: No module named 'ConfigParser' . Installing mysqlclient will install mysqlclient, mysql-connector, and llvmdev (at least, it installed these 3 libraries on my machine).

Here is the tale of my rambling experience with this problem. Would love to see it edited or generalised if you have better experience of the issue... apply a bit of that SO magic.

Note: Comments in next paragraph applied to Snow Leopard, but not to Lion, which appears to require 64-bit MySQL

First off, the author (still?) of MySQLdb says here that one of the most pernicious problems is that OS X comes installed with a 32 bit version of Python, but most average joes (myself included) probably jump to install the 64 bit version of MySQL. Bad move... remove the 64 bit version if you have installed it (instructions on this fiddly task are available on SO here), then download and install the 32 bit version (package here)

There are numerous step-by-steps on how to build and install the MySQLdb libraries. They often have subtle differences. This seemed the most popular to me, and provided the working solution. I've reproduced it with a couple of edits below

Step 0: Before I start, I assume that you have MySQL, Python, and GCC installed on the mac.

Step 1: Download the latest MySQL for Python adapter from SourceForge.

Step 2: Extract your downloaded package:

tar xzvf MySQL-python-1.2.2.tar.gz

Step 3: Inside the folder, clean the package:

sudo python setup.py clean

COUPLE OF EXTRA STEPS, (from this comment)

Remove everything under your MySQL-python-1.2.2/build/* directory -- don't trust the "python setup.py clean" to do it for you

Remove the egg under Users/$USER/.python-eggs

Step 4: Originally required editing _mysql.c, but is now NO LONGER NECESSARY. MySQLdb community seem to have fixed this bug now.

Step 5: Create a symbolic link under lib to point to a sub-directory called mysql. This is where it looks for during compilation.

sudo ln -s /usr/local/mysql/lib /usr/local/mysql/lib/mysql

Step 6: Edit the setup_posix.py and change the following

mysql_config.path = "mysql_config"

to

mysql_config.path = "/usr/local/mysql/bin/mysql_config"

Step 7: In the same directory, rebuild your package (ignore the warnings that comes with it)

sudo python setup.py build

Step 8: Install the package and you are done.

sudo python setup.py install

Step 9: Test if it's working. It works if you can import MySQLdb.

python

>>> import MySQLdb

If upon trying to import you receive an error complaining that Library not loaded: libmysqlclient.18.dylib ending with: Reason: image not found you need to create one additional symlink which is:

sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib

You should then be able to import MySQLdb without any errors.

One final hiccup though is that if you start Python from the build directory you will get this error:

/Library/Python/2.5/site-packages/MySQL_python-1.2.3c1-py2.5-macosx-10.5-i386.egg/_mysql.py:3: UserWarning: Module _mysql was already imported from /Library/Python/2.5/site-packages/MySQL_python-1.2.3c1-py2.5-macosx-10.5-i386.egg/_mysql.pyc, but XXXX/MySQL-python-1.2.3c1 is being added to sys.path

This is pretty easy to Google, but to save you the trouble you will end up here (or maybe not... not a particularly future-proof URL) and figure out that you need to cd .. out of build directory and the error should disappear.

As I wrote at the top, I'd love to see this answer generalised, as there are numerous other specific experiences of this horrible problem out there. Edit away, or provide your own, better answer.

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Here's another step I had to go through, after receiving an error on completing Step 9:

ImportError: dlopen(/Users/rick/.python-eggs/MySQL_python-1.2.3-py2.6-macosx-10.6-universal.egg-tmp/_mysql.so, 2): Library not loaded: libmysqlclient.18.dylib sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib

Reference: Thanks! http://ageekstory.blogspot.com/2011_04_01_archive.html

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Just had this problem (again!) after getting a new Lion box.

Best solution I've found (still not 100% optimal, but working):

make sure you have 64-bit python. How to check if a library is 32bit/64bit built on Mac OS X?

install easy_install if you don't have it. http://packages.python.org/distribute/easy_install.html

install GCC if you don't have it.

you can get it by downloading XCode/Dev Tools from Apple - this is a big download -

... but instead I recommend this github which has what you need (and does not have XCode): https://github.com/kennethreitz/osx-gcc-installer

I downloaded their prebuilt PKG for lion, https://github.com/downloads/kennethreitz/osx-gcc-installer/GCC-10.7-v2.pkg

make sure you have downloaded a 64-BIT version of MYSQL Community. (The DMG install is an easy route) http://dev.mysql.com/downloads/mysql/

Set paths as follows:

export PATH=$PATH:/usr/local/mysql-XXXX

export DYLD_LIBRARY_PATH = /usr/local/mysql/lib/

export ARCHFLAGS='-arch x86_64'

NOTE THAT:

1 in mysql-XXXX above, XXX is the specific version you downloaded. (Probably /usr/local/mysql/ would also work since this is most likely an alias to the same, but I won't pretend to know your setup)

2 I have seen it suggested that ARCHFLAGS be set to '-arch i386 -arch x86_64' but specifying only x86_64 seemed to work better for me. (I can think of some reasons for this but they are not strictly relevant).

Install the beast!

easy_install MySQL-python

LAST STEP:

Permanently add the DYLD_LIBRARY_PATH!

You can add it to your bash_profile or similar. This was the missing step for me, without which my system continued to insist on various errors finding _mysql.so and so on.

export DYLD_LIBRARY_PATH = /usr/local/mysql/lib/

@richard-boardman, just noticed your soft link solution, which may in effect be doing the same thing my PATH solution does...folks, whatever works best for you.

Best reference: http://activeintelligence.org/blog/archive/mysql-python-aka-mysqldb-on-osx-lion/

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If you are using 64 bit MySQL, using ARCHFLAGS to specify your cpu architecture while building mysql-python libraries would do the trick:

ARCHFLAGS='-arch x86_64' python setup.py build ARCHFLAGS='-arch x86_64' python setup.py install

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A quick and easy way for Mac OS X 10.8 (Mountain Lion), 10.9 (Mavericks), 10.10 (Yosemite), and 10.11 (El Capitan):

I assume you have XCode, its command line tools, Python, and MySQL installed.

Install PIP:

sudo easy_install pip

Edit ~/.profile: (Might not be necessary in Mac OS X 10.10)

nano ~/.profile

Copy and paste the following two line

export PATH=/usr/local/mysql/bin:$PATH export DYLD_LIBRARY_PATH=/usr/local/mysql/lib/

Save and exit. Afterwords execute the following command:

source ~/.profile

Install MySQLdb

sudo pip install MySQL-python

To test if everything works fine just try

python -c "import MySQLdb"

It worked like a charm for me. I hope it helps.

If you encounter an error regarding a missing library: Library not loaded: libmysqlclient.18.dylib then you have to symlink it to /usr/lib like so:

sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib

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Install pip:

sudo easy_install pip

Install brew:

ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"

Install mysql:

brew install mysql

Install MySQLdb

sudo pip install MySQL-python

If you have compilation problems, try editing the ~/.profile file like in one of the answers here.

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As stated on Installing MySQL-python on mac :

pip uninstall MySQL-python brew install mysql pip install MySQL-python

Then test it :

python -c "import MySQLdb"

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You could try using the pure-python pymysql:

sudo easy_install pymysql

(Or use pip if you have it installed.) Then, add this before you import MySQLdb in your code:

try: import pymysql pymysql.install_as_MySQLdb() except ImportError: pass

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Or simple try:

> sudo easy_install MySQL-python

If it gives a error like below:

EnvironmentError: mysql_config not found

, then just run this

> export PATH=$PATH:/usr/local/mysql/bin

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export PATH=$PATH:/usr/local/mysql/bin/

should fix the issue for you as the system is not able to find the mysql_config file.

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On macos Sierra this work for me, where python is managed by anaconda:

anaconda search -t conda mysql-python

anaconda show CEFCA/mysql-python

conda install --channel https://conda.anaconda.org/CEFCA mysql-python

The to use with SQLAlchemy:

Python 2.7.13 |Continuum Analytics, Inc.| (default, Dec 20 2016, 23:05:08) [GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)] on darwin Type "help", "copyright", "credits" or "license" for more information. Anaconda is brought to you by Continuum Analytics. Please check out: http://continuum.io/thanks and https://anaconda.org

>>> from sqlalchemy import *

>>>dbengine = create_engine('mysql://....')

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This answer is an update, circa November 2019. None of the popular pip installs will give you a working setup on MacOS 10.13 (and likely other versions as well). Here is a simple way that I got things working:

brew install mysql pip install mysqlclient

If you need help installing brew, see this site: https://brew.sh/

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I ran into this issue and found that mysqlclient needs to know where to find openssl, and OSX hides this by default.

Locate openssl with brew info openssl, and then add the path to your openssl bin to your PATH:

export PATH="/usr/local/opt/openssl/bin:$PATH"

I recommend adding that to your .zshrc or .bashrc so you don't need to worry about it in the future. Then, with that variable exported (which may meed closing and re-opening your bash session), add two more env variables:

# in terminal export LDFLAGS="-L/usr/local/opt/openssl/lib" export CPPFLAGS="-I/usr/local/opt/openssl/include"

Then, finally, run:

pipenv install mysqlclient

and it should install just fine.

Source: https://medium.com/@shandou/pipenv-install-mysqlclient-on-macosx-7c253b0112f2