Machine Learning - Python _ Classes and Objects

I was watching the tutorials and I could not understand what was the constructor in the “Dog” class made in the tutorial . Does Python just take the very first function defined as the constructor ?

No the constructor of a class is made by using init()
Like in the case of the Dog class that you are talking about ,the function
def init(self,breed): <- is actually acting as a constructor .
So answering to your question,no python only takes the function "init() " as the constructor

PS: the bold one is actually the " underscore underscore init underscore underscore " that is taken as something bold in the Reply