在PyCharm 2020.1中安装PyQt5 + qtpy软件包时出错：SSL模块不可用

Question

在Win10中安装Qt（5.14.2）之后，我在PyCharm 2020.1中创建了一个新项目。从项目设置对话框中，我尝试安装PyQt5和qtpy软件包。我收到以下错误：

Collecting PyQt5
Could not fetch URL https://pypi.org/simple/pyqt5/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pyqt5/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.")) - skipping
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

pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
  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/pyqt5/
  Retrying (Retry(total=3, 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/pyqt5/
  Retrying (Retry(total=2, 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/pyqt5/
  Retrying (Retry(total=1, 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/pyqt5/
  Retrying (Retry(total=0, 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/pyqt5/
  Could not find a version that satisfies the requirement PyQt5 (from versions: )
No matching distribution found for PyQt5
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.

SSL模块不可用。如何安装？能否请你帮忙？非常感谢！

Answer 1

[确定，我找到了关于GitHub的解决方案。 .dll文件必须从垃圾箱复制到DLLs文件中。