Python 无法安装连接失败的任何包bc

**这就是我输入的错误，例如：

pip-install-pandas

**

Defaulting to user installation because normal site-packages is not writeable
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000001B963291A30>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/pandas/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000001B9632918B0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/pandas/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000001B963291370>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/pandas/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000001B96329E280>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/pandas/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000001B96329E610>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/pandas/
ERROR: Could not find a version that satisfies the requirement pandas (from versions: none)
ERROR: No matching distribution found for pandas

默认为用户安装，因为普通站点包不可写
警告：在连接被“NewConnectionError（”：未能建立新连接：[Errno 11001]getaddrinfo Failed'）断开后重试（重试（总计=4，连接=None，读取=None，重定向=None，状态=None））：/simple//
警告：在连接被“NewConnectionError（”：未能建立新连接：[Errno 11001]getaddrinfo Failed'）断开后重试（重试（总计=3，连接=None，读取=None，重定向=None，状态=None））：/simple//
警告：在连接被“NewConnectionError（”：未能建立新连接：[Errno 11001]getaddrinfo Failed'）断开后重试（重试（总计=2，连接=None，读取=None，重定向=None，状态=None））：/simple//
警告：在连接被“NewConnectionError（”：未能建立新连接：[Errno 11001]getaddrinfo Failed'）断开后重试（重试（总计=1，连接=None，读取=None，重定向=None，状态=None））：/simple//
警告：在连接被“NewConnectionError（”：未能建立新连接：[Errno 11001]getaddrinfo Failed'）断开后重试（重试（总计=0，连接=None，读取=None，重定向=None，状态=None））：/simple//
错误：找不到满足要求的版本（来自版本：无）
错误：找不到熊猫的匹配分发

当您使用“pip--version”和“python--version”时，控制台会输出什么？如果您能向我们提供更多信息，例如：您使用的环境、您为重现问题所采取的步骤等，那么问题将得到更好的解决。