我在安装 spacy_readability 时遇到了困难，这似乎是由旧版本的 ujson 引起的。所以我安装了最新版本的ujson：
!pip install --upgrade ujson --user
Requirement already satisfied: ujson in c:\users\desktop pc\appdata\roaming\python\python38\site-packages (1.35)
Collecting ujson
Using cached ujson-5.1.0-cp38-cp38-win_amd64.whl (36 kB)
Installing collected packages: ujson
ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
syllapy 0.7.1 requires ujson<2.0,>=1.35, but you have ujson 5.1.0 which is incompatible.
Attempting uninstall: ujson
Found existing installation: ujson 1.35
Uninstalling ujson-1.35:
Successfully uninstalled ujson-1.35
Successfully installed ujson-5.1.0
我认为该错误无关紧要，因为我没有使用 syllapy，但也许我弄错了。然后我尝试了 spacey_readability
!pip install spacy_readability --user
Requirement already satisfied: spacy_readability in c:\users\desktop pc\appdata\roaming\python\python38\site-packages (1.4.1)
Requirement already satisfied: syllapy<1,>=0 in c:\users\desktop pc\appdata\roaming\python\python38\site-packages (from spacy_readability) (0.7.1)
Requirement already satisfied: spacy<3.0,>=2.0 in c:\programdata\anaconda3\lib\site-packages (from spacy_readability) (2.2.3)
Requirement already satisfied: murmurhash<1.1.0,>=0.28.0 in c:\programdata\anaconda3\lib\site-packages (from spacy<3.0,>=2.0->spacy_readability) (1.0.6)
Requirement already satisfied: preshed<3.1.0,>=3.0.2 in c:\programdata\anaconda3\lib\site-packages (from spacy<3.0,>=2.0->spacy_readability) (3.0.6)
Requirement already satisfied: cymem<2.1.0,>=2.0.2 in c:\programdata\anaconda3\lib\site-packages (from spacy<3.0,>=2.0->spacy_readability) (2.0.6)
Requirement already satisfied: blis<0.5.0,>=0.4.0 in c:\programdata\anaconda3\lib\site-packages (from spacy<3.0,>=2.0->spacy_readability) (0.4.1)
Requirement already satisfied: srsly<1.1.0,>=0.1.0 in c:\users\desktop pc\appdata\roaming\python\python38\site-packages (from spacy<3.0,>=2.0->spacy_readability) (1.0.5)
Requirement already satisfied: setuptools in c:\programdata\anaconda3\lib\site-packages (from spacy<3.0,>=2.0->spacy_readability) (52.0.0.post20210125)
Requirement already satisfied: requests<3.0.0,>=2.13.0 in c:\programdata\anaconda3\lib\site-packages (from spacy<3.0,>=2.0->spacy_readability) (2.25.1)
Requirement already satisfied: numpy>=1.15.0 in c:\programdata\anaconda3\lib\site-packages (from spacy<3.0,>=2.0->spacy_readability) (1.20.1)
Requirement already satisfied: thinc<7.4.0,>=7.3.0 in c:\programdata\anaconda3\lib\site-packages (from spacy<3.0,>=2.0->spacy_readability) (7.3.1)
Requirement already satisfied: catalogue<1.1.0,>=0.0.7 in c:\users\desktop pc\appdata\roaming\python\python38\site-packages (from spacy<3.0,>=2.0->spacy_readability) (1.0.0)
Requirement already satisfied: wasabi<1.1.0,>=0.4.0 in c:\programdata\anaconda3\lib\site-packages (from spacy<3.0,>=2.0->spacy_readability) (0.9.0)
Requirement already satisfied: plac<1.2.0,>=0.9.6 in c:\programdata\anaconda3\lib\site-packages (from spacy<3.0,>=2.0->spacy_readability) (1.1.3)
Requirement already satisfied: idna<3,>=2.5 in c:\programdata\anaconda3\lib\site-packages (from requests<3.0.0,>=2.13.0->spacy<3.0,>=2.0->spacy_readability) (2.10)
Requirement already satisfied: urllib3<1.27,>=1.21.1 in c:\programdata\anaconda3\lib\site-packages (from requests<3.0.0,>=2.13.0->spacy<3.0,>=2.0->spacy_readability) (1.26.4)
Requirement already satisfied: certifi>=2017.4.17 in c:\programdata\anaconda3\lib\site-packages (from requests<3.0.0,>=2.13.0->spacy<3.0,>=2.0->spacy_readability) (2020.12.5)
Requirement already satisfied: chardet<5,>=3.0.2 in c:\programdata\anaconda3\lib\site-packages (from requests<3.0.0,>=2.13.0->spacy<3.0,>=2.0->spacy_readability) (4.0.0)
Collecting ujson<2.0,>=1.35
Using cached ujson-1.35-cp38-cp38-win_amd64.whl
Requirement already satisfied: tqdm<5.0.0,>=4.10.0 in c:\programdata\anaconda3\lib\site-packages (from thinc<7.4.0,>=7.3.0->spacy<3.0,>=2.0->spacy_readability) (4.59.0)
Installing collected packages: ujson
Attempting uninstall: ujson
Found existing installation: ujson 5.1.0
Uninstalling ujson-5.1.0:
Successfully uninstalled ujson-5.1.0
Successfully installed ujson-1.35
ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
python-language-server 0.36.2 requires ujson>=3.0.0; python_version > "3", but you have ujson 1.35 which is incompatible.
python-jsonrpc-server 0.4.0 requires ujson>=3.0.0, but you have ujson 1.35 which is incompatible.
我发现这个输出非常混乱。它似乎正在检测 ujson 1.35 然后用它替换它的更新版本，注意到它不够新然后导致错误。我该如何避免这种情况？