What is the result of `str.join([‘a’,’b’,’c’])` called as `’-‘.join([‘a’,’b’,’c’])`? Python ProfessionalHard Try Now
What is the result of calling `sorted()` on a list of tuples like `[(2,’b’),(1,’a’),(2,’a’)]` by default? Python ProfessionalHard Try Now
Which of the following correctly implements a Singleton pattern in Python using a metaclass? Python ProfessionalHard Try Now