No macros in Python

[Ben Leslie]

On Mon, 16 Dec 2002, Courageous wrote:

> 
> >Hmm, that's called "unhygienic macros" and is widely considered a bad
> >idea. 
> 
> I know what unhygienic macros are. One way around this flaw might be
> to create a context in which the enclosing namespace is made available
> but not the default. This would allow a specific and deliberate
> manipulation of the enclosing namespace, but avoid accidental ones.
> I'm just sort of thinking out loud here.
> 
> Of course, for all I know, there's a way to grab the stack and get
> the invokers locals already, if you really insist on this. Is there?
> 

Use the inspect module. Example:


"""
import inspect

def callee():
	caller_frame = inspect.currentframe().f_back
	print caller_frame.f_code.co_name
	print caller_frame.f_locals

def caller():
	caller_local_1 = 3
	callee()

def caller2():
	x = 12
	callee()

caller()
caller2()
"""

Output:

caller
{'caller_local_1': 3}
caller2
{'x': 12}