matching a string to extract substrings for which some function returns true

[Amit Khemka]

Hello All,

say you have some string: "['a', 'b', 1], foobar ['d', 4, ('a', 'e')]"
Now i want to extract all substrings for which
"isinstance(eval(substr), list)" is "True" .
now one way is to walk through the whole sample string and check the
condition, I
was wondering if there is any smarter way of doing the same, may be
using regular-expressions.

Thanks,
amit.

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Endless the quest;
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