使用 jupyter 笔记本在 M1 Mac 上未定义名称“_mysql”

Question

我正在尝试在苹果硅 mac 上运行一个 jupyter 笔记本，并且进行了大量的故障排除。 最新的问题是：我用 pip 安装了必要的库，但程序无法识别它们。 pandas 和 numpy 也发生了同样的事情，它们在安装 anaconda（但没有 pip）后开始工作。 这是堆栈跟踪：

ImportError                               Traceback (most recent call last)
/opt/homebrew/lib/python3.9/site-packages/MySQLdb/__init__.py in <module>
     17     from MySQLdb.release import version_info
---> 18     from . import _mysql
     19 

ImportError: dlopen(/opt/homebrew/lib/python3.9/site-packages/MySQLdb/_mysql.cpython-39-darwin.so, 2): no suitable image found.  Did find:
    /opt/homebrew/lib/python3.9/site-packages/MySQLdb/_mysql.cpython-39-darwin.so: mach-o, but wrong architecture
    /opt/homebrew/lib/python3.9/site-packages/MySQLdb/_mysql.cpython-39-darwin.so: mach-o, but wrong architecture

During handling of the above exception, another exception occurred:

NameError                                 Traceback (most recent call last)
/var/folders/nq/fmv846f95p519gmbd0fc2nj40000gn/T/ipykernel_915/3639928363.py in <module>
      4 import numpy
      5 import pandas as pd
----> 6 import MySQLdb

/opt/homebrew/lib/python3.9/site-packages/MySQLdb/__init__.py in <module>
     22     raise ImportError(
     23         "this is MySQLdb version {}, but _mysql is version {!r}\n_mysql: {!r}".format(
---> 24             version_info, _mysql.version_info, _mysql.__file__
     25         )
     26     )

NameError: name '_mysql' is not defined

会发生什么？ 请帮忙

Answer 1

即使我的回答已经很晚了，我仍然想在这里分享我目前的解决方法。

我在 OEL8 上遇到了同样的问题。 但是我发现了一个奇怪的解决方法。 “NameError: name '_mysql' is not defined”仅在 pandas 或在我的情况下也是 seaborn 在 MySQLdb 之前导入时发生。 MySQLdb 和数据科学库之间似乎存在冲突。 一旦找到适当的解决方案或对此行为的解释，我将立即更新我的回复。

>>> import pandas
>>> import MySQLdb
Traceback (most recent call last):
  File "/usr/lib64/python3.9/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 "<stdin>", line 1, in <module>
  File "/usr/lib64/python3.9/site-packages/MySQLdb/__init__.py", line 24, in <module>
    version_info, _mysql.version_info, _mysql.__file__
NameError: name '_mysql' is not defined

>>> import MySQLdb
>>> import pandas
>>>