Bryon Adams wrote:
> On 11/18/2016 08:16 PM, Alan Gauld via Tutor wrote:
>> for index, item in enumerate(prefix):
>> prefix[index] = item[1]
>>
>>
>
> I forgot about enumerate! That helped me clean up and actually finish my
> next exercise as I was having trouble working for my lists the way I was
> previously.
>
> Thank you very much =)
enumerate() is a useful tool, but given the code you provide in your
original post I recommend that you build a new list rather than modifying
the existing one:
prefix = []
for item in entries:
prefix.append(item[1])
The above is such a common pattern that Python offers syntactic sugar called
"list comprehension" to write this:
prefix = [item[1] for item in entries]
In both cases the original entries list is not changed.
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