How do I use the __str__ method within a class declaration to print a formatted string?

I checked the other similar question to this, but it's not asking nearly the same thing. My problem is that I'm trying to use a __str__ method inside of a Python 3's class definition to access some variables that have already been passed into the class via the constructor.

When the class prints, I want it to print a formatted string with two variables inserted. When I pass the variables into the __str__ declaration, I get one error. When I call the variables in the actual formatted string (with or without self-dot) I get two more errors.

The only way I know to make it work is to pass the specific variables into the __str__ method header as default values def __str__(self, name="john", age = 23):

I know there's only one real way to do this. Am I supposed to use __repr__ with __str__ in order for it to work? Here's the source code:

class Tenderloin( ):

	def __main__(self, nameo = "none", age= 0, nation = "none", race = "none", personality = "none"):
	
		self.nameo = nameo;
		self.age = age;
		self.nation = nation;
		self.race = race;
		self.personality = personality;

	def __init__(self, nameo, age, nation, race, personality):
		print("Hi. My name is " + str(nameo) + ". I am " + str(age) + " years old.\nI come from " + str(nation) + " of the " + str		(race) + " race. My personality is " + str(personality));
	
	def __str__(self, name, age):
		return  f"This is  {str(self.nameo)},  {str(self.age)}.";
		

john = Tenderloin("John Jenkins", 23, "America", "black", "nice"); 
jellaye = Tenderloin("Jellaye Flabbaghan", 48, "Hindustand", "Crustasian", "bellowing");
print(str(john));
print(str(jellaye));	

gets = input("Please press Enter.");

There is no such thing as existing __main__ instance method (that name style is reserved for builtin methods), also the signature for the str method is def __str__(self) and you don't need to call explicit str() around inside a print.

The only use of __main__ that you'll have is like this

class Tenderloin:

    def __init__(self, nameo="none", age=0, nation="none", race="none", personality="none"):
        self.nameo = nameo
        self.age = age
        self.nation = nation
        self.race = race
        self.personality = personality

    def __str__(self):
        return f"This is {self.nameo}, {self.age}."


if __name__ == '__main__':
    john = Tenderloin("John Jenkins", 23, "America", "black", "nice")
    jellaye = Tenderloin("Jellaye Flabbaghan", 48, "Hindustand", "Crustasian", "bellowing")
    print(john)
    print(jellaye)

And python doesn't need ; at the end of lines

This should work now.

class Tenderloin( ):

    def __init__(self, nameo = "none", age= 0, nation = "none", race = "none", personality = "none"):
        self.nameo = nameo
        self.age = age
        self.nation = nation
        self.race = race
        self.personality = personality

        print("Hi. My name is " + str(nameo) + ". I am " + str(age) + " years old.\nI come from " + str(nation) + " of the " + str      (race) + " race. My personality is " + str(personality))
    
    def __str__(self):
        return  f"This is  {str(self.nameo)},  {str(self.age)}."
        

john = Tenderloin("John Jenkins", 23, "America", "black", "nice"); 
jellaye = Tenderloin("Jellaye Flabbaghan", 48, "Hindustand", "Crustasian", "bellowing")
print(str(john))
print(str(jellaye))

gets = input("Please press Enter.")

I'm sorry. I inadvertently answered my own question for a second time. I had a working version of the Python class with the str method in a jupyter notebook, but I didn't have an internet connection at the time so I couldn't review it. Basically, the str method that formats a string for printing the object is only meant to be used in jupyter notebooks (and maybe VBC, I'm not sure). It's not supposed to be used for someone who's just dinking around in a PY file in Notepad. Yes, I do most of my programming in Notepad.