It is possible to write a function that passes all current tests in the Balanced Parentheses Check problem but that fails with an IndexError if a closing parentheses occurs when there is an empty stack.
Adding this test case handles the issue:
assert_equal(sol('][[[]])]'),False)
It is possible to write a function that passes all current tests in the Balanced Parentheses Check problem but that fails with an IndexError if a closing parentheses occurs when there is an empty stack.
Adding this test case handles the issue: