CondaHTTPError: HTTP None None for url

已经使用清华的源，还是无法下载包。

国内的一些运营商无法访问，可以通过下面的命令看到：

conda config --show

add_anaconda_token: True
add_pip_as_python_dependency: True
allow_softlinks: True
always_copy: False
always_softlink: False
always_yes: False
auto_update_conda: True
binstar_upload: None
changeps1: True
channel_alias: https://conda.anaconda.org
channel_priority: True
channels:
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/
  - defaults
client_ssl_cert: 
client_ssl_cert_key: 
create_default_packages: []
debug: False
default_channels:
  - https://repo.continuum.io/pkgs/free
  - https://repo.continuum.io/pkgs/r
  - https://repo.continuum.io/pkgs/pro
disallow: []
envs_dirs:
  - /Users/xingwei/anaconda3/envs
  - /Users/xingwei/.conda/envs

默认还是使用repo.continuum.io的源：

直接修改conda.rc配置文件：

# vim .condarc

添加如下代码：

default_channels:

- https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free

- https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge

再通过下面的命令查看：

conda config --show

add_anaconda_token: True
add_pip_as_python_dependency: True
allow_softlinks: True
always_copy: False
always_softlink: False
always_yes: False
auto_update_conda: True
binstar_upload: None
changeps1: True
channel_alias: https://conda.anaconda.org
channel_priority: True
channels:
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/
  - defaults
client_ssl_cert: 
client_ssl_cert_key: 
create_default_packages: []
debug: False
default_channels:
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge

OK, just enjoy conda!

默认使用repo.continuum.io的源：