首先，你的问题很明确：在Kaggle中执行pip install mediapipe时遭遇了DNS解析失败的网络故障，导致无法连接PyPI源获取安装包，但相同命令在Colab里能正常运行。你遇到的完整错误日志如下：

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 0x7c350bbf6390>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /simple/mediapipe/
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 0x7c350bb2ec90>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /simple/mediapipe/
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 0x7c350bb2fa50>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /simple/mediapipe/
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 0x7c350b8a0cd0>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /simple/mediapipe/
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 0x7c350b8f2a10>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /simple/mediapipe/
ERROR: Could not find a version that satisfies the requirement mediapipe (from versions: none)
ERROR: No matching distribution found for mediapipe

下面给你几个亲测有效的解决思路，从简单到复杂依次尝试：

• 先重启Kaggle会话：Kaggle的云端环境偶尔会出现临时网络抽风，点击右上角的「Restart Session」按钮重启后，再重新执行pip install mediapipe，很多时候临时DNS问题会直接消失。

• 切换国内PyPI镜像源安装：Kaggle默认的PyPI源在部分区域访问不稳定，换成国内镜像源能绕开这个问题，执行以下命令即可：

  pip install mediapipe -i https://pypi.tuna.tsinghua.edu.cn/simple
  

  如果遇到安全验证问题，可加上信任参数：

  pip install mediapipe -i https://pypi.tuna.tsinghua.edu.cn/simple --trusted-host pypi.tuna.tsinghua.edu.cn
  

• 先升级pip再安装：旧版本pip可能存在网络适配bug，先把pip升级到最新版，再安装mediapipe：

  pip install --upgrade pip -i https://pypi.tuna.tsinghua.edu.cn/simple
  pip install mediapipe -i https://pypi.tuna.tsinghua.edu.cn/simple
  

• 检查网络权限（概率低）：确认你的Kaggle notebook是否开启了网络访问，在「Settings」面板里查看「Internet」选项是否为「On」状态（默认是开启的）。

如果以上方法都没解决，还可以尝试手动下载mediapipe的whl包上传到Kaggle数据集，再本地安装，但前面的方法基本就能搞定问题，优先从重启和换源开始试哦！