python3.8 use async getting invalid sysntax_python error use async with instead-优快云博客

本文链接：https://blog.youkuaiyun.com/weixin_43794736/article/details/134198478

文章讲述了在使用Python3.8时遇到关于asynchronous功能的无效语法错误，以及在尝试加载fever-drqa库时遇到的与CoreNLPTokenizer和pexpect相关的问题。解决方法是通过pip进行升级。

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python3.8 use async getting invalid sysntax

加载fever-drqa时报错：

 File "/data/yangjun/fact/wikifact/scripts/search_module.py", line 2, in <module>                                                                           from drqa.retriever import DocDB, utils                                                                                                                   File "/data/yangjun/.conda/envs/tor18/lib/python3.8/site-packages/drqa/__init__.py", line 20, in <module>                                                     from . import tokenizers
  File "/data/yangjun/.conda/envs/tor18/lib/python3.8/site-packages/drqa/tokenizers/__init__.py", line 20, in <module>
    from .corenlp_tokenizer import CoreNLPTokenizer
  File "/data/yangjun/.conda/envs/tor18/lib/python3.8/site-packages/drqa/tokenizers/corenlp_tokenizer.py", line 14, in <module>
    import pexpect
  File "/data/yangjun/.conda/envs/tor18/lib/python3.8/site-packages/pexpect/__init__.py", line 75, in <module>
    from .pty_spawn import spawn, spawnu
  File "/data/yangjun/.conda/envs/tor18/lib/python3.8/site-packages/pexpect/pty_spawn.py", line 14, in <module>
    from .spawnbase import SpawnBase
  File "/data/yangjun/.conda/envs/tor18/lib/python3.8/site-packages/pexpect/spawnbase.py", line 224                                                             def expect(self, pattern, timeout=-1, searchwindowsize=-1, async=False):                                                                                                                                               ^                                                                                            
  SyntaxError: invalid syntax

解决方案：

python -m pip install --upgrade pip
python -m pip install pexpect --upgrade