こんなエラーが出た場合

Traceback (most recent call last):
  File "/usr/local/lib64/python3.8/site-packages/MySQLdb/__init__.py", line 18, in <module>
    from . import _mysql
ImportError: /lib64/libstdc++.so.6: cannot allocate memory in static TLS block

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "xxxx.py", line 15, in <module>
    import MySQLdb
  File "/usr/local/lib64/python3.8/site-packages/MySQLdb/__init__.py", line 24, in <module>
    version_info, _mysql.version_info, _mysql.__file__
NameError: name '_mysql' is not defined

対応の１つ

/etc/profile に記述

export LD_PRELOAD=/lib64/libstdc++.so.6