在 PyCharm 2020.1 中安裝 PyQt5 + qtpy 包時出錯：SSL 模塊不可用

Question

在 Win10 中安裝 Qt (5.14.2) 后，我在 PyCharm 2020.1 中創建了一個新項目。 從項目設置對話框中，我嘗試安裝 PyQt5 和 qtpy 包。 我收到以下錯誤：

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 模塊不可用。 我該如何安裝它？ 能否請你幫忙？ 非常感謝！

Answer 1

好的，我在GitHub上找到了解決方案。 .dll 文件必須從 bin 復制到 DLL 文件中。