Why am I getting 'Library not loaded: libmysqlclient.16.dylib' when importing MySQLdb on Mac 10.6?-Mysql Tutorial-php.cn

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Why am I getting 'Library not loaded: libmysqlclient.16.dylib' when importing MySQLdb on Mac 10.6?

Patricia Arquette

Nov 07, 2024 am 02:41 AM

Why am I getting

Python import MySQLdb Error on Mac 10.6

When attempting to import the MySQLdb package in Python on a Mac 10.6 system, users may encounter an error related to a missing library: "Library not loaded: libmysqlclient.16.dylib." This error commonly arises after installing both MySQL and MySQLdb.

Troubleshooting Steps:

The error message suggests that the MySQL C client library cannot be found. To resolve this, ensure that the following steps have been completed:

Install MySQL: Visit the MySQL download page and install MySQL 5.5.8 or a compatible version.
Install MySQLdb Python Plugin: Obtain the MySQLdb package from PyPI or SourceForge. Install it using pip or the appropriate method based on your system's requirements.

Troubleshooting on Mac 10.6:

For Mac 10.6 users, an additional bug and workaround need consideration.

Check libmysqlclient.16.dylib Existence: Ensure that the library file "libmysqlclient.16.dylib" exists in "/usr/local/mysql/lib." If not, install the missing file from the MySQL distribution.
Possible Workaround: As suggested in MySQL bug 59006, create symbolic links:
- sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib
- sudo ln -s /usr/local/mysql/lib /usr/local/mysql/lib/mysql

Other Potential Solutions:

Check Library Path: Verify the value of DYLD_LIBRARY_PATH and ensure it includes the path to the required MySQL library.
Clean Python Egg Files: Remove any existing MySQLdb egg files and reinstall the package.
Verify Output of otool Commands: Use the otool command to check the contents of the libraries involved and confirm if the appropriate references exist.

Additional Notes:

The specific library version may vary depending on the MySQL distribution used. Adjust the version numbers in the symbolic link commands accordingly.
If the issue persists, consult the official MySQL documentation or seek assistance from the MySQL community forums.

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