Python3: How to pickle class objects into text file and read it back?

if __name__ == "__main__":  
    h1 = Person(5)
    print (h1)

As shown above, I have a object h1 of class Person needed to be saved as text file (.txt). I'm wondering how to fulfill this persistence and read it back?

Some users suggested to use pickle, I think I probably need more detail here.