windows 10安装Anaconda后pip报SSL错解决

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安装Anaconda后使用pip安装包时出现SSL模块不可用的问题。通过安装openssl或将Anaconda路径添加到环境变量中解决了该问题。

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问题

新装的系统，安装anaconda(python=3.7)后

# pip install xxx
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Collecting xxx
    Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/xxx/
  ......
     Could not fetch URL https://pypi.org/simple/xxx/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/ssl/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.")) - skipping
    Could not find a version that satisfies the requirement xxx(from versions: )
No matching distribution found for xxx
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.")) - skipping

以前安装完的anaconda都是直接用的，现在安装了最新的版本反而直接出错，找了很多地方都没解决，思考一下，ssl模块出错。

# python
Python 3.7.1 (default, Dec 10 2018, 22:54:23) [MSC v.1915 64 bit (AMD64)] :: Anaconda, Inc. on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import _ssl
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: DLL load failed: 找不到指定的模块。

可能openssl没有安装的原因，所以装了一下openssl，https://slproweb.com/products/Win32OpenSSL.html
可以下载编译好的，或者以任何方式安装openssl，再次运行pip正常。