It's me wrote:
because the interpreter evaluates the tuple (1, len(a)) before applying the indexing to it.For this code snip:
a=3 ..... b=(1,len(a))[isinstance(a,(list,tuple,dict))]
Why would I get a TypeError from the len function?
Thanks,
You are trying to be far too clever. The standard way to write this would be:
a = 3
....
b = 1
if isinstance(a,(list,tuple,dict)):
b = len(a)Is code length *really* so important? Think carefully ...
regards Steve -- Steve Holden http://www.holdenweb.com/ Python Web Programming http://pydish.holdenweb.com/ Holden Web LLC +1 703 861 4237 +1 800 494 3119 -- http://mail.python.org/mailman/listinfo/python-list
