Add command to setup the CLI

[nikochiko]

Changes proposed in this PR:

• Update login.py to allow calling from another command
• Added command to set up the CLI configuration like host and auth token
• Command example:

   evalai setup -u USER -p PASSWORD [-h HOST]

• Added unit tests for the above command still in progress, but thought I could gain some feedback on the main code in the meanwhile:

P.S.: I tried using a fancy name and showing EvalAI in Text Art form to make it a little interesting 😅 . Please let me know if that needs to be changed.

Mentors: @vkartik97 @pushkalkatara @Ram81 @RishabhJain2018 @yashdusing

[nikochiko]

Also want to point this out: evalai/login.py#L20-L33 :

This block can be replaced with the set_token command to maintain consistency and following DRY.

Also, there is a possible bug in the code: the except block doesn't end with sys.exit(1) . Hence, the final "Logged in successfully!" will be printed even if the code threw an OSError/IOError.

[nikochiko]

Ah, pardon me for the mess of commits here. I should've squashed and merged 😅 .

Anyways, a lot of changes proposed in this PR :smile::

• Refactor code so that multiple commands can use the same piece of code.
• Removed the previous dependency on other commands, instead both use same helper functions to maintain similar error logs.
• Added exit codes at a few place.
• Added unit tests for everything new (setup command, refactored auth utils)

This is in addition to the above description ☝️

Thanks!

[nikochiko]

@yashdusing the new command is completely covered (coveralls report). The reason for the coverage going down is the part I refactored for usage in multiple places. I am working on it right now and will update the PR with the tests in a few hours!

[nikochiko]

@yashdusing Fixed both issues! 😄

[yashdusing]

LGTM 👍 @Ram81 @pushkalkatara @vkartik97 @RishabhJain2018 please review

[yashdusing]

@nikochiko could you please attach a link to a gif to the PR demonstrating the new command ?

[nikochiko]

@yashdusing Made the gif: Successful with prompt:

When login fails, revert message:

[nikochiko]

@vkartik97 Done! 😄 The new line slipped in during the merging 😸 Fixed it now!