Comments on: Constantize in Python http://blog.littleimpact.de/index.php/2009/02/08/constantize-in-python/ Things that have more than zero impact (on my live) Wed, 02 May 2012 09:10:57 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: Justin http://blog.littleimpact.de/index.php/2009/02/08/constantize-in-python/#comment-7048 Justin Thu, 17 Dec 2009 01:36:06 +0000 http://blog.littleimpact.de/index.php/2009/02/08/constantize-in-python/#comment-7048 well, being able to obtain a reference to an object in the global namespace using its name as a string is orthogonal to deciding what you want to do with it. I was just providing a better alternative to using regular expressions and eval(). you could easily maintain a whitelist of names that you will allow lookups for. i.e. whitelist = ['A','B'] def str2class(str): return str in whitelist and globals()[str] well, being able to obtain a reference to an object in the global namespace using its name as a string is orthogonal to deciding what you want to do with it. I was just providing a better alternative to using regular expressions and eval().

you could easily maintain a whitelist of names that you will allow lookups for. i.e.

whitelist = ['A','B']

def str2class(str):
return str in whitelist and globals()[str]

]]> By: Henryk http://blog.littleimpact.de/index.php/2009/02/08/constantize-in-python/#comment-7046 Henryk Wed, 16 Dec 2009 23:26:51 +0000 http://blog.littleimpact.de/index.php/2009/02/08/constantize-in-python/#comment-7046 @Justin Thank you for your comment. Your proposition looks better than an "eval", but you still need to check whether the class is "allowed". @Justin
Thank you for your comment. Your proposition looks better than an "eval",
but you still need to check whether the class is "allowed".

]]> By: Justin http://blog.littleimpact.de/index.php/2009/02/08/constantize-in-python/#comment-7043 Justin Wed, 16 Dec 2009 21:20:36 +0000 http://blog.littleimpact.de/index.php/2009/02/08/constantize-in-python/#comment-7043 or you could just use globals()["MyClass"] or you could just use globals()["MyClass"]

]]> By: Little Impact » Blog Archive » Constantize with Care http://blog.littleimpact.de/index.php/2009/02/08/constantize-in-python/#comment-4763 Little Impact » Blog Archive » Constantize with Care Tue, 15 Sep 2009 11:53:26 +0000 http://blog.littleimpact.de/index.php/2009/02/08/constantize-in-python/#comment-4763 [...] I also have some notes on Constantize in Python. Share and [...] [...] I also have some notes on Constantize in Python. Share and [...]

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