import sys
print(sys.version)

class Foo:
	""" A class """
	def bar():
		" Hello world "
		pass


print(Foo.__doc__)
print(Foo().__doc__)
print(Foo.bar.__doc__)
print(Foo().bar.__doc__)

from functools import wraps
def my_decorator(f):
    @wraps(f)
    def wrapper(*args, **kwds):
        print('Calling decorated function')
        return f(*args, **kwds)
    return wrapper

@my_decorator
def example():
    """Docstring"""
    print('Called example function')
print(example.__doc__)