How to Disassemble an object creation in Python?

Question

Having a class like this:

class Spam(object):
   def __init__(self, name=''):
      self.name = name

eggs = Spam('systempuntoout')

using dis, is it possible to see how an instance of a class and the respective hex Identity are created?

Answer 1

Yes, but it isn't obvious from the output, which is at the level of Python bytecode, e.g.:

>>> class Foo(object):
...   def f(x): return x * x
... 
>>> dis.dis(Foo)
Disassembly of f:
  2           0 LOAD_FAST                0 (x)
              3 LOAD_FAST                0 (x)
              6 BINARY_MULTIPLY     
              7 RETURN_VALUE        

It doesn't take much to figure out what Foo.f is doing from the above dump, but it quickly becomes unreadable to most people as the size of the code grows.