Creating a local variable with a parameterized name

[Felix Thibault]

At 17:57 1/29/00 -0500, Michael Ross wrote:
>I'm new to this, so I hope I'm not missing something obvious...
>
>I want to create a local variable with a passed in name.
>
>I realize I can do the following:
>
>>>> def f(varname):
>             cmd = '%s = 123' % varname
>             exec(cmd)
>             cmd = 'print %s' % varname
>             exec(cmd)
>
>>>> f('mike')
>123
>>>>
>
>But exec needs to invoke the parser, which seems to be an extremely
>costly thing to do.
>
>It seems local variables are stored in a special, inaccesible (from
>python) place in the frame object (I've been looking at
>PyFrame_FastToLocals and PyFrame_LocalsToFast). Do I need to write C
>code to do this?  A builtin to do this would be nice...
>
>Thanks in advance!
>Mike Ross
>
>-- 
>http://www.python.org/mailman/listinfo/python-list
>
>

Would something like one of these work?

>>> class Warehouse:
	def __init__(self, name, value):
		setattr(self, name, value)
	def __call__(self, name):
		return getattr(self, name)
		
		
>>> w = Warehouse('Mike', 123)
>>> w('Mike')
123

>>> class Empty:
	pass
>>> w = Empty()
>>> w.Mike = 123