conda更新报错

CondaValueError: Malformed version string '~': invalid character(s).

尝试

$ conda upgrade -n base -c defaults --override-channels conda

conda安装包报错

PackagesNotFoundError: The following packages are not available from current channels: ruamel_yaml_conda

pip和conda部分安装包名不完全一致

pip下 ruamel_yaml_conda 等价于conda下 ruamel.yaml

使用：

$ conda install -c conda-forge ruamel.yaml

RemoveError: 'requests' is a dependency of conda and cannot be removed from conda's operating environment

执行：

$ conda update --force conda

conda编码报错

Fatal Python error: init_sys_streams: can't initialize sys standard streams LookupError: unknown encoding: 65001

执行：

$ set pythonioencoding=utf-8

查看：

$ echo %PYTHONIOENCODING%