问notebook 装包又不行了，原先可以的，为什么呢？

tione@notebook-haujy7w7gk-55475fd4b7-mhw8r:~/notebook$ pip install --user math

Collecting math

Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f249a137a58>: Failed to establish a new connection: [Errno 111] Connection refused',)': /simple/math/

Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f249a137320>: Failed to establish a new connection: [Errno 111] Connection refused',)': /simple/math/

Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f249a137940>: Failed to establish a new connection: [Errno 111] Connection refused',)': /simple/math/

Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f249a137fd0>: Failed to establish a new connection: [Errno 111] Connection refused',)': /simple/math/

Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f249a1372b0>: Failed to establish a new connection: [Errno 111] Connection refused',)': /simple/math/

Could not find a version that satisfies the requirement math (from versions: )

No matching distribution found for math

tione@notebook-haujy7w7gk-55475fd4b7-mhw8r:~/notebook$ pip install --user torch

Requirement already satisfied: torch in /usr/local/lib/python3.5/dist-packages (1.3.0)

Requirement already satisfied: numpy in /usr/local/lib/python3.5/dist-packages (from torch) (1.15.4)

tione@notebook-haujy7w7gk-55475fd4b7-mhw8r:~/notebook$ pip install --user tqdm

Collecting tqdm

Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f8c239d2780>: Failed to establish a new connection: [Errno 111] Connection refused',)': /simple/tqdm/

Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f8c239d2828>: Failed to establish a new connection: [Errno 111] Connection refused',)': /simple/tqdm/

Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f8c239d2be0>: Failed to establish a new connection: [Errno 111] Connection refused',)': /simple/tqdm/

Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f8c239d2e10>: Failed to establish a new connection: [Errno 111] Connection refused',)': /simple/tqdm/

Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f8c239d2710>: Failed to establish a new connection: [Errno 111] Connection refused',)': /simple/tqdm/

Could not find a version that satisfies the requirement tqdm (from versions: )

No matching distribution found for tqdm

tione@notebook-haujy7w7gk-55475fd4b7-mhw8r:~/notebook$