导入apex时出错
import apex
错误信息:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/mnt/lustre/chenshoufa/anaconda3/envs/pytorch18/lib/python3.8/site-packages/apex/__init__.py", line 8, in <module>
from . import amp
File "/mnt/lustre/chenshoufa/anaconda3/envs/pytorch18/lib/python3.8/site-packages/apex/amp/__init__.py", line 1, in <module>
from .amp import init, half_function, float_function, promote_function,\
File "/mnt/lustre/chenshoufa/anaconda3/envs/pytorch18/lib/python3.8/site-packages/apex/amp/amp.py", line 1, in <module>
from . import compat, rnn_compat, utils, wrap
File "/mnt/lustre/chenshoufa/anaconda3/envs/pytorch18/lib/python3.8/site-packages/apex/amp/rnn_compat.py", line 1, in <module>
from . import utils, wrap
File "/mnt/lustre/chenshoufa/anaconda3/envs/pytorch18/lib/python3.8/site-packages/apex/amp/wrap.py", line 3, in <module>
from ._amp_state import _amp_state
File "/mnt/lustre/chenshoufa/anaconda3/envs/pytorch18/lib/python3.8/site-packages/apex/amp/_amp_state.py", line 14, in <module>
from torch._six import container_abcs
ImportError: cannot import name 'container_abcs' from 'torch._six' (/mnt/lustre/chenshoufa/anaconda3/envs/pytorch18/lib/python3.8/site-packages/torch/_six.py)
解决思路:
出错的原因是torch不同版本中container_abcs导入差异导致的。因为1.8版本之后container_abcs就已经被移除了。cannot import name 'container_abcs' from 'torch._six'
在使用一些开源代码的时候,可能会遇到该错误。解决方法也很简单我们只需要给它更新。
例如在apex/amp/_amp_state.py中
TORCH_MAJOR = int(torch.__version__.split('.')[0])
TORCH_MINOR = int(torch.__version__.split('.')[1])
if TORCH_MAJOR == 0:
import collections.abc as container_abcs
else:
from torch._six import container_abcs
改为:
TORCH_MAJOR = int(torch.__version__.split('.')[0])
TORCH_MINOR = int(torch.__version__.split('.')[1])
if TORCH_MAJOR == 1 and TORCH_MINOR < 8:
from torch._six import container_abcs
else:
import collections.abc as container_abcs
参考:
关于升级pytorch1.9后出现cannot import name ‘container_abcs‘ from ‘torch._six‘错误的解决方法_星辰辰大海的博客-CSDN博客