Questions Programming, regexes, state machines

[ceylonexplorer]

Consinder this regex in Python ".+@.+":

What is the meaning of q1? When i saw alternative state machine for ".*@.*" it looks like this:

 

[Amith0424]

"+@+"

 

[ceylonexplorer]

"+@+"

what, I am asking what is the meaning of the addition q1 in first state machine

 

[Amith0424]

what, I am asking what is the meaning of the addition q1 in first state machine

initial state/default

 

[ceylonexplorer]

I asked from claude(failed),

initial state/default

Then why two depictions are not same? is it added because of we have to represent one repetition mandotoraly when it comes to ".+@.+"