NOT find “PyIOBase_Type” in libpython3.9.so.1 with python3.9.9

[zhuofeng6]

Bug report

i can find PyIOBase_Type in libpython3.7m.so.1 with python3.7.9

[root@localhost ~]# python --version
Python 3.7.9
[root@localhost ~]# strings /usr/lib64/libpython3.7m.so.1.0 |grep PyIOBase_Type
PyIOBase_Type

but i can't find PyIOBase_Type in libpython3.9.so.1 with python3.9.9

[root@localhost lib64]# python --version
Python 3.9.9
[root@localhost lib64]# strings /usr/lib64/libpython3.9.so.1.0 |grep PyIOBase_Type
[root@localhost lib64]# 

Your environment

• CPython versions tested on: python3.7.9 and python3.9.9
• Operating system and architecture: arm64

[zhuofeng6]

it leads that when i import zookeeper [https://github.com/apache/zookeeper], it is some wrong

[sobolevn]

It is defined here: https://github.com/python/cpython/blob/3.9/Modules/_io/_iomodule.h#L8

Are you sure that this is not an issue with zookeeper?

[zhuofeng6]

I know that this has been defined here，but strings /usr/lib64/libpython3.7m.so.1.0 |grep PyIOBase_Type can print something, however, strings /usr/lib64/libpython3.9.so.1.0 |grep PyIOBase_Type print nothing. This is weird

It is defined here: https://github.com/python/cpython/blob/3.9/Modules/_io/_iomodule.h#L8

Are you sure that this is not an issue with zookeeper?

i am sure, it is OK with python3.7.9, and it is some wrong with python3.9.9

[ronaldoussoren]

AFAIK PyIOBase_Type is not part of the public API for CPython. The error is likely due to zookeeper trying to use the symbol while the CPython build proces has been changed to hide symbols that shouldn't be public (e.g. use -fvisibility=hidden with GCC/Clang).

Please ask the zookeeper maintainers about this.