Accessing your QLattice

by: Kevin Broløs & Tom Jelen
(Feyn version 1.4 or newer)

The keys to the self-driving car

In order to use your QLattice, you need two key components.

You can get both of these pieces of information from the dashboard.

QLattice

The QLattice is an identifier that will look something like this:

a1b2c3d4

On your dashboard, it can be found under [QLattice_Name] > Details :: QLattice.

User Access Token

The User Access Token is your authentication credential for accessing the QLattice (so keep it safe). It can be found on the same dashboard page as above, under [QLattice_Name] > Details :: User Access Token and will look something like this:

c1a2c3a406d6e6729012e0de4d8c7a2c

Using your credentials

In short, you can provide your credentials in two different ways:

  • In the initializer.
  • From a configuration file.

In the initializer

This is the simplest way. You just pass them in as the arguments qlattice and api_token to the QLattice initializer.

from feyn import QLattice
qlattice = QLattice(qlattice="a1b2c3d4",
                    api_token="c1a2c3a406d6e6729012e0de4d8c7a2c")

From a configuration file

Alternatively, you can store them in a local configuration file like this:

[QuesadillaLattice]
qlattice = a1b2c3d4
api_token = c1a2c3a406d6e6729012e0de4d8c7a2c

[QuibbleLattice]
qlattice = ...
api_token = ...

The configuration file should be placed in your home folder (or in the .config subfolder), and be called feyn.ini if you are on Windows, otherwise .feynrc.

With the configuration file in place, you can connect to the QLattice by specifying which configuration section to use. Or none at all, and the first configuration section will be used.

from feyn import QLattice
qlattice = QLattice()  # Will use the QuesadillaLattice section.

qlattice = QLattice(config="QuibbleLattice")  # Loads the QuibbleLattice configurations.

We recommend you use this approach, as it allows you to share code with others, without accidentially disclosing your access token.

Firewalls

It's very easy, because feyn uses standard HTTPS to communicate with your QLattice. The QLattice is running in the abzu cluster on qlattice.abzu.ai.

Therefore, if you can reach https://qlattice.abzu.ai/firewall-test from the computer running feyn, then you are good to go.

Also, proxies are supported automatically, as long as they are configured in one of the most common ways on your OS.

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