What is the correct way to define a new class?

What is the correct way to define a new class?

Class time:

Class time

class Time:

Class Time:

$$

$$ print$($result$)$

def calculate$\_$sum$($a$,$ b$)$

$$ result $=$ a $+$ b

$$ result

elif x $==5$:

$$print$($x is equal to $5)$

else:

$$print$($x is greater than $5)$

x is equal to $5.$

No output will be produced.

x is greater than $5.$

x is less than $5.$