一、问题
我的问题是用pip安装包（ pip install —upgrade setuptools）的时候出现问题：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.
spyder 5.1.5 requires pyqt5<5.13, which is not installed.
spyder 5.1.5 requires pyqtwebengine<5.13, which is not installed.
conda–repo–cli 1.0.4 requires pathlib, which is not installed.
anaconda–project 0.10.2 requires ruamel–yaml, which is not installed.
从问题提示来看，就是pip 的依赖项解析器当前未考虑安装的所有包。此行为是以下依赖项冲突的根源。
二、解决办法
我就根据错误提示，分别重新安装了以上四个版本要求的包，不再截图，把代码附上：
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple " pyqt5<5.13"
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple " pyqtwebengine<5.13"
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple pathlib
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple ruamel-yaml原文地址:https://blog.csdn.net/weixin_44692055/article/details/128549899
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