Can't install tornado

Question

I am setting up tensorflow and i got this output:

ERROR: matplotlib 1.3.1 requires nose, which is not installed.

so i am doing

sudo easy_install tornado

and i got as output:

earching for tornado
Reading https://pypi.python.org/simple/tornado/
Download error on https://pypi.python.org/simple/tornado/: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:590) -- Some packages may not be found!
Couldn't find index page for 'tornado' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading https://pypi.python.org/simple/
Download error on https://pypi.python.org/simple/: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:590) -- Some packages may not be found!
No local packages or download links found for tornado
error: Could not find suitable distribution for Requirement.parse('tornado')

what should i do? thanks francesco

ERROR: matplotlib 1.3.1 requires nose, which is not installed.

Answer 1

It seems that you are running the command behind a proxy or a firewall. If this is the case, then you need to set the corresponding environment variables:

set http_proxy="username:password@host:port"
set https_proxy="username:password@host:port"

Otherwise, you can install tornado using pip by running (if you are not behind a proxy, then ignore --proxy):

pip --proxy http://user:password@proxy-host:port install tornado

EDIT: I would suggest to run

sudo -H pip install --ignore-installed matplotlib

in order to install the required packages and ignore the current version.