如何解决Kaggle/Colab中pip安装optuna-integration的报错问题

问题详情 #

执行命令 !pip install optuna-integration 后出现DNS解析失败的报错，具体信息如下：

WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7944200bc370>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /simple/optuna-integration/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7944200bc670>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /simple/optuna-integration/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7944200bc910>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /simple/optuna-integration/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7944200bcac0>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /simple/optuna-integration/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7944200bcc70>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /simple/optuna-integration/
ERROR: Could not find a version that satisfies the requirement optuna-integration (from versions: none)
ERROR: No matching distribution found for optuna-integration

已确认未启用VPN、未使用8.8.8.8 DNS及代理，问题仍未解决。

解决建议 #

• 切换国内PyPI镜像源：官方源访问不稳定可能导致DNS解析失败，尝试用国内镜像加速安装：

  !pip install optuna-integration -i https://pypi.tuna.tsinghua.edu.cn/simple
  

• 检查网络连通性：在终端执行 ping pypi.org，确认能否正常连通。若不通，可切换到国内公共DNS（如114.114.114.114）后重试。
• 核实包名正确性：确认包名是否为optuna-integration，避免因包名错误导致安装失败。
• 更新pip版本：旧版pip可能存在兼容性问题，先更新再安装：

  !pip install --upgrade pip -i https://pypi.tuna.tsinghua.edu.cn/simple
  !pip install optuna-integration -i https://pypi.tuna.tsinghua.edu.cn/simple
  

• 离线安装备选：若网络问题无法解决，在能正常访问PyPI的环境下载.whl或.tar.gz格式的安装包，传输到目标环境后执行本地安装：

  !pip install /path/to/optuna_integration_package.whl
  

内容的提问来源于stack exchange，提问作者DRACO HO