ubuntun 16.04 AttributeError: type object 'Callable' has no attribute '_abc

ubuntun 16.04 python 升级到3.7遇到各种坑

其中在openvino 跑模型时遇到以下错误：

root@magicdepth-OptiPlex-7010:/opt/intel/openvino/deployment_tools/model_optimizer# python3 mo.py --input_model INPUT_MODEL
Traceback (most recent call last):File "mo.py", line 28, in <module>from mo.main import mainFile "/opt/intel/openvino_2019.2.275/deployment_tools/model_optimizer/mo/main.py", line 27, in <module>from mo.utils import import_extensionsFile "/opt/intel/openvino_2019.2.275/deployment_tools/model_optimizer/mo/utils/import_extensions.py", line 23, in <module>from mo.back.replacement import BackReplacementPatternFile "/opt/intel/openvino_2019.2.275/deployment_tools/model_optimizer/mo/back/replacement.py", line 17, in <module>from mo.utils import class_registrationFile "/opt/intel/openvino_2019.2.275/deployment_tools/model_optimizer/mo/utils/class_registration.py", line 23, in <module>from mo.graph.graph import GraphFile "/opt/intel/openvino_2019.2.275/deployment_tools/model_optimizer/mo/graph/graph.py", line 24, in <module>from mo.graph.port import PortFile "/opt/intel/openvino_2019.2.275/deployment_tools/model_optimizer/mo/graph/port.py", line 18, in <module>from mo.front.common.partial_infer.utils import int64_arrayFile "/opt/intel/openvino_2019.2.275/deployment_tools/model_optimizer/mo/front/common/partial_infer/utils.py", line 21, in <module>from typing import IterableFile "/opt/ptyhon3.7/lib/python3.7/site-packages/typing.py", line 1357, in <module>class Callable(extra=collections_abc.Callable, metaclass=CallableMeta):File "/opt/ptyhon3.7/lib/python3.7/site-packages/typing.py", line 1005, in __new__self._abc_registry = extra._abc_registry
AttributeError: type object 'Callable' has no attribute '_abc_registry'

查了下相关资料,这是因为python3.7和python 3.6 中的typing，不兼容所导致，

　　可以看下这个国外上面的帖子(不需要翻墙)：

　　　　https://github.com/modin-project/modin/issues/540

可以使用

pip3 show typing

查看typing版本，如果是typing　3,6,6版本则尝试将其卸载

pip uninstall typing

但是这次升级openvino　R3.1版本同样遇到该问题，typing 版本是３.7.4,同样还是有问题，

继续卸载，typing库，就是和它杠上了

sudo pip3 uninstall typing

卸载完成之后，重新运行 OK.

ubuntun 16.04 将python从系统自带的3.5升级到3.7会遇到各种坑，这只是其中一个

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