WARNING: There was an error checking the latest version of pip.

[chunkingzou]

安装python依赖报错这个，请问该怎么解决呢？
Looking in indexes: https://pypi.doubanio.com/simple/
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 0xffff8ff7d4e0>: Failed to establish a new connection: [Errno 111] Connection refused')': /simple/jieba/
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 0xffff8ff7d810>: Failed to establish a new connection: [Errno 111] Connection refused')': /simple/jieba/
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 0xffff8ff7db70>: Failed to establish a new connection: [Errno 111] Connection refused')': /simple/jieba/
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 0xffff8ff7dd20>: Failed to establish a new connection: [Errno 111] Connection refused')': /simple/jieba/
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 0xffff8ff7ded0>: Failed to establish a new connection: [Errno 111] Connection refused')': /simple/jieba/
ERROR: No matching distribution found for jieba
WARNING: There was an error checking the latest version of pip.