pylibmc: Error trying to import pylibmc

Hey I seem to be installing fine, I am running Mac OSX 10.7, pylibmc 1.2.3 and I am not sure which version of libmemcached I am running but I just installed it so I assume it is the newest release. The problem occurs when I attempt to import pylibmc. I get the following error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "pylibmc/__init__.py", line 70, in <module>
    import _pylibmc
ImportError: dlopen(/Library/Python/2.7/site-packages/_pylibmc.so, 2): Symbol not found: _memcached_add
  Referenced from: /Library/Python/2.7/site-packages/_pylibmc.so
  Expected in: flat namespace
 in /Library/Python/2.7/site-packages/_pylibmc.so

About this issue

Original URL
State: closed
Created 12 years ago
Reactions: 1
Comments: 26 (13 by maintainers)

Most upvoted comments

Hello, I have similar issue.

I am running macOS with apple silicon. running python 3.7 with x86 interpreter.

after installing libmemcached with brew install libmemcached I was able to install pylibmc with the following command: pip install pylibmc==1.6.0 --install-option="--with-libmemcached=/opt/homebrew/Cellar/libmemcached/1.0.18_2"

but while trying to import pylibmc it failed with: ImportError: dlopen(.../site-packages/_pylibmc.cpython-37m-darwin.so, 0x0002): symbol not found in flat namespace '_memcached_add'

I am thing that brew install compiling the library with apple silicon but then i am trying to use it with x86 interpreter. Any suggestions ?

shon-otmazgin on Jan 5, 2022

@singhravi1 It does indeed depend on it, but the wheel comes with a “universal library” bundled that runs both on ARM64 and x86. Thanks for your feedback!!!

lericson on Sep 14, 2022

Ok, I have published pylibmc 1.6.3 with wheels that SHOULD work on ARM64 as well. Anyone able to try?

lericson on Sep 1, 2022