conda install python=3.6
Solving environment: failed
CondaHTTPError: HTTP 404 NOT FOUND for url https://conda.anaconda.org/conda-virtualenvwrapper/noarch/repodata.json
Elapsed: 01:06.926256
CF-RAY: 4c9cbd30484da2d8-HKG
The remote server could not find the noarch directory for the
requested channel with url: https://conda.anaconda.org/conda-virtualenvwrapper
As of conda 4.3, a valid channel must contain a noarch/repodata.json and
associated noarch/repodata.json.bz2 file, even if noarch/repodata.json is
empty. please request that the channel administrator create
noarch/repodata.json and associated noarch/repodata.json.bz2 files.
$ mkdir noarch
$ echo ‘{}’ > noarch/repodata.json
$ bzip2 -k noarch/repodata.json
You will need to adjust your conda configuration to proceed.
Use conda config --show channels to view your configuration’s current state.
Further configuration help can be found at https://conda.io/docs/config.html.
上面这个问题出现了很久，终于勉强解决了，我时直接恢复默认源就解决了
1.输入conda config --show channels
2.输入conda config --remove-key channels，这个命令是恢复默认源
之后再查看，输入conda config --show channels，发现channels只剩
再输入conda install python=3.6(我是安装Python3.6版本的）<然后成功下载。不能保证每个人情况一样，我的可以了。