Function that knows its argument's variable name
gherron at islandtraining.com
Sun Mar 14 17:45:51 CET 2010
Helge Stenström wrote:
> I want to write function that prints a value of a variable, for
> debugging. Like:
> myVariable = "parrot"
> otherVariable = "dead"
> instead of the longer
> print "myVariable = ", myVariable
> print "otherVariable = ", otherVariable
> Is that even possible?
> The function would look like
> def probe(var):
> nameOfVar = someMagic(var)
> print nameOfVar, " = ", var
> but can someMagic(var) find the variable name? Is that possible?
That question really doesn't quite make sense. Consider all the
ways such a function can be called:
None of which have a variable name associated with the argument.
Yet, the answer to your question is not quite absolutely "no". Python
has lots of introspection capabilities, including, perhaps, getting at
and parsing the original code to find the call. But there's nothing
direct for what you want.
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