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Update example: Deleting a list while iterating over it

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* Corrects the explanation for `del` keyword.

Fixes https://github.com/satwikkansal/wtfpython/issues/16
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Satwik Kansal 2017-09-05 00:05:07 +05:30
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@ -362,8 +362,8 @@ Can you guess why the output is `[2, 4]`?
**Difference between `del`, `remove`, and `pop`:**
* `del var_name` just removes the binding of the `var_name` from the local or global namespace (That's why the `list_1` is unaffected).
* `remove` removes the first matching value, not a specific index, raises `ValueError` if the value is not found.
* `del` removes a specific index (That's why first `list_1` was unaffected), raises `IndexError` if an invalid index is specified.
* `pop` removes element at a specific index and returns it, raises `IndexError` if an invalid index is specified.
**Why the output is `[2, 4]`?**