Also, do y'all call main() in the if block or do you just put the code you want to run in the if block?
If the file is just a class I usually put example usage with some default arguments in that block by itself. There is no reason for a "main" function. It's a nice obvious block that doesn't run when someone imports the class but if they're looking at the class there is a really obvious place to see the class usage. No confusion about what "main()" is meant to do.
if __name__ == '__main__':
# MyClass example Usage
my_object = MyClass()
my_object.my_method()