SOreadytohelp, apparently :)

class Oops(object): def __init__(self): Oops.__call__ = self x = Oops() x() 

---

> Z = lambda f: (lambda x: f(lambda *args: x(x)(*args)))(lambda x: f(lambda *args: x(x)(*args))) > fact = Z(lambda f: lambda x: 1 if x == 0 else x * f(x-1)) > fact(5) ... 120 

---

> 0 < 0 == 0 False 

---

def foo(): return yield 

---

raise TypeError() from ValueError() 

---

def spam(*, ham): pass 

---

Move code from try to else if you don't want to catch any errors that it produces.

try: do_not_do_this_at_home() except ToldYouSo: die() else: whaddyaknow() finally: cleanup() 

---

Yowza!

> class attrdict(dict): def __init__(self, *args, **kwargs): dict.__init__(self, *args, **kwargs) self.__dict__ = self 

---

@functools.lru_cache(maxsize=None) def fib(n): if n < 2: return n return fib(n-1) + fib(n-2)