报错现象：
（记录自己的错误，仅供参考）
PS E:\ddhome> pip install mysqlclient
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1129)'))': /simple/mysqlclient/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1129)'))': /simple/mysqlclient/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1129)'))': /simple/mysqlclient/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1129)'))': /simple/mysqlclient/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1129)'))': /simple/mysqlclient/
Could not fetch URL https://pypi.org/simple/mysqlclient/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/mysqlclient/ (Caused by SSLError(SS
LError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1129)'))) - skipping
ERROR: Could not find a version that satisfies the requirement mysqlclient (from versions: none)
ERROR: No matching distribution found for mysqlclient
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(SSLError(1, '[SSL:
WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1129)'))) - skipping
原因：是因为本地抓包工具打开导致下载报错，关闭抓包工具后执行下载命令
PS E:\ddhome> pip install mysqlclient
Collecting mysqlclient
Downloading mysqlclient-2.1.0-cp39-cp39-win_amd64.whl (180 kB)
|████████████████████████████████| 180 kB 8.9 kB/s
Installing collected packages: mysqlclient
Successfully installed mysqlclient-2.1.0