报错1：

ImportError: dlopen(/Usersopt/anaconda3/lib/python3.9/site-packages/MySQLdb/_mysql.cpython-39-darwin.so, 2): Symbol not found: _mysql_affected_rows

报错2：

Traceback (most recent call last):

  File “<stdin>“, line 1, in <module>

  File “/Users/dxxxlib/python3.9/site-packages/MySQLdb/__init__.py”, line 24, in <module>

    version_info, _mysql.version_info, _mysql.__file__

NameError: name ‘_mysql’ is not defined

具体忘记是先报的那个错，总之就是这俩解了一个回报另一个，这里主要说【NameError: name ‘_mysql’ is not defined】的解法：

// 我没执行完这一步，自己本机的 brew 是 OK 的，这一步执行时间太长了。。。可以先直接后面的，如果不报错说明你自己的brew 本身也是 OK 的
mkdir homebrew-x86 && curl -L https://github.com/Homebrew/brew/tarball/master | tar xz --strip 1 -C homebrew-x86

arch -x86_64 homebrew-x86/bin/brew install mysql-client@5.7

export LDFLAGS="-L/Users/xx/homebrew-x86/opt/mysql-client@5.7/lib"  >> /Users/xx/.bash_profile

export CPPFLAGS="-I/Users/xx/homebrew-x86/opt/mysql-client@5.7/include" >> /Users/xx/.bash_profile

export PKG_CONFIG_PATH="/Users/xx/homebrew-x86/opt/mysql-client@5.7/lib/pkgconfig"  >> /Users/xx/.bash_profile

arch -x86_64 pip install --no-cache-dir --force-reinstall mysqlclient

解决啦~

Reference：

https://github.com/PyMySQL/mysqlclient/issues/496