求解决 python pip install 失败安装问题

Microsoft Windows [版本 10.0.17763.195]
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C:\Users\P>pip install wheel
Collecting wheel
  Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000002CA63DADB38>: Failed to establish a new connection: [WinError 10061] 由于目标计算机积极拒绝，无法连接。'))': /simple/wheel/
  Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000002CA63DADCF8>: Failed to establish a new connection: [WinError 10061] 由于目标计算机积极拒绝，无法连接。'))': /simple/wheel/
  Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000002CA63DADC18>: Failed to establish a new connection: [WinError 10061] 由于目标计算机积极拒绝，无法连接。'))': /simple/wheel/
  Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000002CA63DAD710>: Failed to establish a new connection: [WinError 10061] 由于目标计算机积极拒绝，无法连接。'))': /simple/wheel/
  Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000002CA63DADA58>: Failed to establish a new connection: [WinError 10061] 由于目标计算机积极拒绝，无法连接。'))': /simple/wheel/
  Could not find a version that satisfies the requirement wheel (from versions: )
No matching distribution found for wheel

C:\Users\P>pip install lxml
Collecting lxml
  Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000001DEE9B55128>: Failed to establish a new connection: [WinError 10061] 由于目标计算机积极拒绝，无法连接。'))': /simple/lxml/
  Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000001DEE9FBDB38>: Failed to establish a new connection: [WinError 10061] 由于目标计算机积极拒绝，无法连接。'))': /simple/lxml/
  Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000001DEE9FBDB00>: Failed to establish a new connection: [WinError 10061] 由于目标计算机积极拒绝，无法连接。'))': /simple/lxml/
  Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000001DEE9FBDBE0>: Failed to establish a new connection: [WinError 10061] 由于目标计算机积极拒绝，无法连接。'))': /simple/lxml/
  Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x000001DEE9FBDCC0>: Failed to establish a new connection: [WinError 10061] 由于目标计算机积极拒绝，无法连接。'))': /simple/lxml/
  Could not find a version that satisfies the requirement lxml (from versions: )
No matching distribution found for lxml

C:\Users\P>