# Anaconda无法安装一些包的问题 **`anaconda Collecting package metadata (current_repodata.json): failed`** 具体报错信息为 ```python (env_name) [root@host anaconda3]# conda install python==3.6.2 Collecting package metadata (current_repodata.json): failed # >>>>>>>>>>>>>>>>>>>>>> ERROR REPORT <<<<<<<<<<<<<<<<<<<<<< Traceback (most recent call last): ''' 此处略去 ''' raise Response304ContentUnchanged() conda.core.subdir_data.Response304ContentUnchanged During handling of the above exception, another exception occurred: ''' 此处略去 ''' json.decoder.JSONDecodeError: Expecting ':' delimiter: line 46906 column 14 (char 1474212) `$ /root/anaconda3/bin/conda install python==3.6.2` ``` 解决方法： 运行 **`conda clean -i`** 清除索引缓存即可，亲测有效