Listing builtin functions and methods (Python)

Question

I have came up with this:

[a for a in dir(__builtins__) if str(type(getattr(__builtins__,a))) == "<type 'builtin_function_or_method'>"]

I know its ugly. Can you show me a better/more pythonic way of doing this?

Answer 1

There is the inspect module:

import inspect

filter(inspect.isbuiltin, (member for name, member in inspect.getmembers(__builtins__)))

Edit: reading the documentation a little more closely, I came up with this variant that doesn't use __getattr__

import inspect

members = (member for name, member in inspect.getmembers(__builtins__))
filter(inspect.isbuiltin, members)

Answer 2

Here's a variation without getattr:

import inspect
[n.__name__ for n in __builtins__.__dict__.values() if inspect.isbuiltin(n)]

And if you want the actual function pointers:

import inspect
[n for n in __builtins__.__dict__.values() if inspect.isbuiltin(n)]