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Insert item before each element of a list

Prasad, Ramit ramit.prasad at jpmorgan.com
Mon Oct 8 17:15:27 EDT 2012 
Agon Hajdari wrote:
> Sent: Monday, October 08, 2012 3:12 PM
> To: python-list at python.org
> Subject: Re: Insert item before each element of a list
> 
> On 10/08/2012 09:45 PM, Chris Kaynor wrote:
> > [('insertme', i) for i in x]
> 
> This is not enough, you have to merge it afterwards.

Why do you say that? It seems to work just fine for me.

>>> x
[0, 1, 2, 3, 4]
>>> [('insertme', i) for i in x]
[('insertme', 0), ('insertme', 1), ('insertme', 2), ('insertme', 3), ('insertme', 4)]

> 
> y = [item for tup in y for item in tup]
> 

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