(base) C:\Users\zhs>conda update conda
Solving environment: failed

# >>>>>>>>>>>>>>>>>>>>>> ERROR REPORT <<<<<<<<<<<<<<<<<<<<<<

    Traceback (most recent call last):
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\exceptions.py", line 789, in __call__
        return func(*args, **kwargs)
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\cli\main.py", line 78, in _main
        exit_code = do_call(args, p)
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\cli\conda_argparse.py", line 77, in do_call
        exit_code = getattr(module, func_name)(args, parser)
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\cli\main_update.py", line 14, in execute
        install(args, parser, 'update')
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\cli\install.py", line 236, in install
        force_reinstall=context.force,
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\core\solve.py", line 504, in solve_for_transaction
        force_remove, force_reinstall)
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\core\solve.py", line 437, in solve_for_diff
        final_precs = self.solve_final_state(deps_modifier, prune, ignore_pinned, force_remove)
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\core\solve.py", line 218, in solve_final_state
        _, inconsistent_dists = r.bad_installed(solution, ())
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\resolve.py", line 731, in bad_installed
        C = r2.gen_clauses()
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\resolve.py", line 509, in gen_clauses
        C.Require(C.Or, nkey, self.push_MatchSpec(C, ms))
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\resolve.py", line 481, in push_MatchSpec
        m = C.from_name(self.push_MatchSpec(C, ms2))
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\resolve.py", line 481, in push_MatchSpec
        m = C.from_name(self.push_MatchSpec(C, ms2))
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\resolve.py", line 481, in push_MatchSpec
        m = C.from_name(self.push_MatchSpec(C, ms2))
      [Previous line repeated 966 more times]
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\resolve.py", line 480, in push_MatchSpec
        ms2 = MatchSpec(track_features=tf) if tf else MatchSpec(nm)
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\models\match_spec.py", line 76, in __call__
        return super(MatchSpecType, cls).__call__(**kwargs)
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\models\match_spec.py", line 178, in __init__
        self._match_components = self._build_components(**kwargs)
      File "C:\Users\zhs\Anaconda3\lib\site-packages\conda\models\match_spec.py", line 365, in _build_components
        return frozendict(_make(key, value) for key, value in iteritems(kwargs))
    RecursionError: maximum recursion depth exceeded

`$ C:\Users\zhs\Anaconda3\Scripts\conda update conda`

  environment variables:
                 CIO_TEST=<not set>
                CLASSPATH=C:\Program Files\Java\jdk-10.0.1\lib
        CONDA_DEFAULT_ENV=base
             CONDA_PREFIX=C:\Users\zhs\Anaconda3
    CONDA_PROMPT_MODIFIER=(base)
         CONDA_PYTHON_EXE=C:\Users\zhs\Anaconda3\python.exe
               CONDA_ROOT=C:\Users\zhs\Anaconda3
              CONDA_SHLVL=1
                 HOMEPATH=\Users\zhs
                     PATH=C:\Users\zhs\Anaconda3;C:\Users\zhs\Anaconda3\Library\mingw-w64\bin;C:
                          \Users\zhs\Anaconda3\Library\usr\bin;C:\Users\zhs\Anaconda3\Library\bi
                          n;C:\Users\zhs\Anaconda3\Scripts;C:\Users\zhs\Anaconda3\bin;C:\Program
                          Files (x86)\Intel\Intel(R) Management Engine
                          Components\iCLS\;C:\Program Files\Intel\Intel(R) Management Engine
                          Components\iCLS\;C:\Program Files (x86)\Common
                          Files\Oracle\Java\javapath;"C:\Program
                          Files\Java\jdk-9.0.1\bin;";C:\Program Files (x86)\Common
                          Files\Oracle\Java;C:\Program Files\Java\jdk-10.0.1\bin;C:\Program File
                          s\Java\jdk-10.0.1\jre\bin;C:\Users\zhs\Anaconda3;C:\Users\zhs\Anaconda
                          3\Library\bin;C:\Users\zhs\Anaconda3\Scripts;D:\Python\Scripts\;D:\Pyt
                          hon\;C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\window
                          s\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\NVIDIA Corpo
                          ration\PhysX\Common;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32
                          \Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\
                          OpenSSH\;C:\Program Files (x86)\Intel\Intel(R) Management Engine
                          Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine
                          Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine
                          Components\IPT;C:\Program Files\Intel\Intel(R) Management Engine
                          Components\IPT;C:\Program Files\Intel\WiFi\bin\;C:\Program
                          Files\Common Files\Intel\WirelessCommon\;C:\Program Files
                          (x86)\CodeBlocks\MinGW\bin;C:\Program Files (x86)\Microsoft SQL
                          Server\100\Tools\Binn\;C:\Program Files (x86)\Microsoft SQL
                          Server\100\DTS\Binn\;C:\Program Files (x86)\Microsoft SQL
                          Server\100\Tools\Binn\VSShell\Common7\IDE\;d:\Program
                          Files\MATLAB\R2017a\runtime\win64;d:\Program
                          Files\MATLAB\R2017a\bin;C:\Program Files\Microsoft VS
                          Code\bin;C:\Users\zhs\AppData\Local\Microsoft\WindowsApps;C:\Program
                          Files\Intel\WiFi\bin\;C:\Program Files\Common
                          Files\Intel\WirelessCommon\;D:\Intell\IntelliJ IDEA 2018.3.5\bin;
             PSMODULEPATH=C:\Program Files\WindowsPowerShell\Modules;C:\WINDOWS\system32\Windows
                          PowerShell\v1.0\Modules
         PYTHONIOENCODING=936
       REQUESTS_CA_BUNDLE=<not set>
            SSL_CERT_FILE=<not set>

     active environment : base
    active env location : C:\Users\zhs\Anaconda3
            shell level : 1
       user config file : C:\Users\zhs\.condarc
 populated config files : C:\Users\zhs\.condarc
          conda version : 4.4.10
    conda-build version : 3.4.1
         python version : 3.6.4.final.0
       base environment : C:\Users\zhs\Anaconda3  (writable)
           channel URLs : https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/win-64
                          https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/noarch
                          https://repo.continuum.io/pkgs/main/win-64
                          https://repo.continuum.io/pkgs/main/noarch
                          https://repo.continuum.io/pkgs/free/win-64
                          https://repo.continuum.io/pkgs/free/noarch
                          https://repo.continuum.io/pkgs/r/win-64
                          https://repo.continuum.io/pkgs/r/noarch
                          https://repo.continuum.io/pkgs/pro/win-64
                          https://repo.continuum.io/pkgs/pro/noarch
                          https://repo.continuum.io/pkgs/msys2/win-64
                          https://repo.continuum.io/pkgs/msys2/noarch
          package cache : C:\Users\zhs\Anaconda3\pkgs
                          C:\Users\zhs\AppData\Local\conda\conda\pkgs
       envs directories : C:\Users\zhs\Anaconda3\envs
                          C:\Users\zhs\AppData\Local\conda\conda\envs
                          C:\Users\zhs\.conda\envs
               platform : win-64
             user-agent : conda/4.4.10 requests/2.18.4 CPython/3.6.4 Windows/10 Windows/10.0.17134
          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
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    $ conda config --set report_errors true

解决方法：在anaconda prompt中 输入：

conda config --set ssl_verify false