python版本是3.7.3
因为我想通过conda方式来安装，按照飞桨官网安装教程，是先在anaconda命令行输入，
conda create -n paddle_env python=3.7
结果出错，出错信息见下面
`# >>>>>>>>>>>>>>>>>>>>>> ERROR REPORT <<<<<<<<<<<<<<<<<<<<<<

Traceback (most recent call last):
  File "D:\Anaconda3\lib\site-packages\conda\exceptions.py", line 1074, in __call__
    return func(*args,**kwargs)
  File "D:\Anaconda3\lib\site-packages\conda\cli\main.py", line 84, in _main
    exit_code = do_call(args, p)
  File "D:\Anaconda3\lib\site-packages\conda\cli\conda_argparse.py", line 82, in do_call
    exit_code = getattr(module, func_name)(args, parser)
  File "D:\Anaconda3\lib\site-packages\conda\cli\main_create.py", line 37, in execute
    install(args, parser, 'create')
  File "D:\Anaconda3\lib\site-packages\conda\cli\install.py", line 116, in install
    if context.use_only_tar_bz2:
  File "D:\Anaconda3\lib\site-packages\conda\base\context.py", line 666, in use_only_tar_bz2
    import conda_package_handling.api
  File "D:\Anaconda3\lib\site-packages\conda_package_handling\api.py", line 3, in <module>
    from libarchive.exception import ArchiveError as _LibarchiveArchiveError
  File "D:\Anaconda3\lib\site-packages\libarchive\__init__.py", line 1, in <module>
    from .entry import ArchiveEntry
  File "D:\Anaconda3\lib\site-packages\libarchive\entry.py", line 6, in <module>
    from . import ffi
  File "D:\Anaconda3\lib\site-packages\libarchive\ffi.py", line 48, in <module>
    libarchive = ctypes.cdll.LoadLibrary(libarchive_path)
  File "D:\Anaconda3\lib\ctypes\__init__.py", line 434, in LoadLibrary
    return self._dlltype(name)
  File "D:\Anaconda3\lib\ctypes\__init__.py", line 356, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: [WinError 126] 找不到指定的模块。

$ D:\Anaconda3\Scripts\conda-script.py create -n paddle_env python=3.7

environment variables:
CIO_TEST=
CONDA_DEFAULT_ENV=base
CONDA_EXE=D:\Anaconda3\condabin..\Scripts\conda.exe
CONDA_EXES="D:\Anaconda3\condabin..\Scripts\conda.exe"
CONDA_PREFIX=D:\Anaconda3
CONDA_PROMPT_MODIFIER=(base)
CONDA_PYTHON_EXE=D:\Anaconda3\python.exe
CONDA_ROOT=D:\Anaconda3
CONDA_SHLVL=1
CUDA_PATH=C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v10.0
HOMEPATH=\Users\25895
NVTOOLSEXT_PATH=C:\Program Files\NVIDIA Corporation\NvToolsExt
PATH=D:\Anaconda3;D:\Anaconda3\Library\mingw-w64\bin;D:\Anaconda3\Library\u
sr\bin;D:\Anaconda3\Library\bin;D:\Anaconda3\Scripts;D:\Anaconda3\bin;
D:\Anaconda3;D:\Anaconda3\Library\mingw-w64\bin;D:\Anaconda3\Library\u
sr\bin;D:\Anaconda3\Library\bin;D:\Anaconda3\Scripts;D:\Anaconda3\bin;
D:\Anaconda3\condabin;C:\Program Files\NVIDIA GPU Computing
Toolkit\CUDA\v10.0\bin;C:\Program Files\NVIDIA GPU Computing Toolkit\C
UDA\v10.0\libnvvp;C:\windows\system32;C:\windows;C:\windows\System32\W
bem;C:\windows\System32\WindowsPowerShell\v1.0;C:\windows\System32\Ope
nSSH;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program
Files\NVIDIA GPU Computing Toolkit\CUDA\v10.0\include;C:\Program
Files\NVIDIA GPU Computing Toolkit\CUDA\v10.0\lib;C:\Program
Files\NVIDIA GPU Computing Toolkit\CUDA\v10.0\extras\CUPTI\libx64;D:\A
naconda3;D:\Anaconda3\Library\mingw-w64\bin;D:\Anaconda3\Library\usr\b
in;D:\Anaconda3\Library\bin;D:\Anaconda3\Scripts;D:\Python\Scripts;D:
Python;D:\Python37\Scripts;D:\Python37;C:\Users\25895\AppData\Local\Mi
crosoft\WindowsApps
PSMODULEPATH=C:\Program Files\WindowsPowerShell\Modules;C:\windows\system32\Windows
PowerShell\v1.0\Modules
REQUESTS_CA_BUNDLE=
SSL_CERT_FILE=

active environment : base
active env location : D:\Anaconda3
        shell level : 1
   user config file : C:\Users\25895\.condarc

populated config files : C:\Users\25895.condarc
conda version : 4.7.12
conda-build version : 3.18.8
python version : 3.7.3.final.0
virtual packages : __cuda=10.1
base environment : D:\Anaconda3 (writable)
channel URLs : https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/Paddle/win-64
https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/Paddle/noarch
https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/win-64
https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/noarch
https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/win-64
https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/noarch
https://repo.anaconda.com/pkgs/main/win-64
https://repo.anaconda.com/pkgs/main/noarch
https://repo.anaconda.com/pkgs/r/win-64
https://repo.anaconda.com/pkgs/r/noarch
https://repo.anaconda.com/pkgs/msys2/win-64
https://repo.anaconda.com/pkgs/msys2/noarch
package cache : D:\Anaconda3\pkgs
C:\Users\25895.conda\pkgs
C:\Users\25895\AppData\Local\conda\conda\pkgs
envs directories : D:\Anaconda3\envs
C:\Users\25895.conda\envs
C:\Users\25895\AppData\Local\conda\conda\envs
platform : win-64
user-agent : conda/4.7.12 requests/2.22.0 CPython/3.7.3 Windows/10 Windows/10.0.18362
administrator : False
netrc file : None
offline mode : False

An unexpected error has occurred. Conda has prepared the above report.

If submitted, this report will be used by core maintainers to improve
future releases of conda.
Would you like conda to send this report to the core maintainers?

然后我尝试激活paddle环境，失败。
后面尝试加入anconda的环境变量，还是报错