我试图在我的macosx（python 2.7.10）中使用pip（9.0.1）但是每当我安装一些东西时我都会遇到这些错误：
Collecting flask
Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8fa310>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8fa110>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Retrying (Retry(total=2, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8fa550>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Retrying (Retry(total=1, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8fa850>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Retrying (Retry(total=0, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8facd0>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
有些人提到可能与防火墙有关，所以我通过手机连接到网络，然后我执行pip，在这种情况下，似乎安装了东西，但我仍然得到所有这些“重试”，然后下载每个包像：
Collecting flask
Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8fa310>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8fa110>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Retrying (Retry(total=2, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8fa550>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Retrying (Retry(total=1, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8fa850>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Retrying (Retry(total=0, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10b8facd0>: Failed to establish a new connection: [Errno 61] Connection refused',)': /simple/flask/
Downloading Flask-0.12.2-py2.py3-none-any.whl (83kB)
100% |████████████████████████████████| 92kB 1.8MB/s
Collecting itsdangerous>=0.21 (from flask)
Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by '
我知道为什么会收到这些消息？