What common convention do Python programs use to indicate internal-only APIs?

If you use UTF-8 characters in your source file, what should you do to make it work under Python 2?

Given the following code, what will be printed to the standard output? x = 5 def some_function(): print(x) x = 6 some_function() print(x)

This decorated function in python: @foo def bar(): ... is equal to:

How are imaginary numbers denoted in Python?

Which of these arguments is not passed to a metaclass when it is instantiated?

Regarding the code below, what's correct statement ? class Book: def __init__(self, isbn): self.isbn = isbn isbn = 'test' book = Book(12345)

Whic statement is true regarding __slots__ in Python?

Suppose we have a User class, how do we make a new User object?

Output of the following code be: def a(): print 'a executed' return [] def b(x=a()): x.append(5) x.append(1) print x b() b() b()

Regarding Unicode in Python 3, which of the following is incorrect ?