python list prefix each string item and append

Question

How can I do this in shorter way:

vmt = ['title', 'designation', 'company', 'address', 'city', 'country']
vmt_copy = []
vmt_copy[:] = ['old-%s' % item for item in vmt]
vmt[len(vmt):] = vmt_copy
vmt = '|'.join(vmt)

Above script outputs:

Ignacio Vazquez-Abrams · Accepted Answer · 2014-02-08 16:12:19Z

2

vmt.extend('old-%s' % item for item in vmt[:])

You must use a copy of the list so that you don't create an infinite loop of prepending and adding.

answered Feb 8, 2014 at 16:12

Ignacio Vazquez-Abrams

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ssm · Accepted Answer · 2014-02-10 00:44:31Z

1

'|'.join( vmt + map( lambda m: 'old-'+m, vmt) )

Which is essentially what you have.

Edit:

Dont know why this didnt occur to me earlier -

'|'.join(vmt) + '|old-' + '|old-'.join(vmt)

edited Feb 10, 2014 at 0:44

answered Feb 8, 2014 at 16:13

ssm

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