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Mac OS X下python環境下安裝MySQL-python, 使用是報錯
>>> import MySQLdb Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python2.7/site-packages/MySQLdb/__init__.py", line 19, in <module> import _mysql ImportError: dlopen(/usr/local/lib/python2.7/site-packages/_mysql.so, 2): Library not loaded: libmysqlclient.18.dylib Referenced from: /usr/local/lib/python2.7/site-packages/_mysql.so Reason: image not found stackoverflow上可以找到解決方式 Python mysqldb: Library not loaded: libmysqlclient.18.dylib
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基本思路就是
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_mysql.so如何找libmysqlclient.18.dylib
% otool -L /Library/Python/2.7/site-packages/_mysql.so /Library/Python/2.7/site-packages/_mysql.so: libmysqlclient.18.dylib (compatibility version 18.0.0, current version 18.0.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 169.3.0) -
libmysqlclient.18.dylib沒有路徑信息, 修復
% sudo install_name_tool -change libmysqlclient.18.dylib /usr/local/mysql/lib/libmysqlclient.18.dylib /Library/Python/2.7/site-packages/_mysql.so -
修復后, 查看:
% otool -L /Library/Python/2.7/site-packages/_mysql.so /Library/Python/2.7/site-packages/_mysql.so: /usr/local/mysql/lib/libmysqlclient.18.dylib (compatibility version 18.0.0, current version 18.0.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 169.3.0)
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使用brew安裝的mysql, 而且是5.7版本, dylib的位置是:
/usr/local/lib/libmysqlclient.20.dylib
修復的方式是(dylib換成自己環境的位置):
sudo install_name_tool -change libmysqlclient.18.dylib /usr/local/lib/python2.7/site-packages/_mysql.so /usr/local/lib/libmysqlclient.20.dylib
如果用虛擬環境, 每個環境都需要類似的執行一次, 有點麻煩, 暫時我想到的解決方式是使用腳本(fix-mysql-python.sh), shell代碼如下:
PACKAGES_PATH=`python -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())"`
echo $PACKAGES_PATH
install_name_tool -change libmysqlclient.18.dylib /usr/local/lib/libmysqlclient.20.dylib $PACKAGES_PATH/_mysql.so
echo "fix MySQL-python finish"
