Format_a_string_of_names_like_Bart_Lisa_Maggie.md

CodeWars Python Solutions

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Format a string of names like 'Bart, Lisa & Maggie'

Given: an array containing hashes of names

Return: a string formatted as a list of names separated by commas except for the last two names, which should be separated by an ampersand.

Example:

namelist([ {'name': 'Bart'}, {'name': 'Lisa'}, {'name': 'Maggie'} ])
# returns 'Bart, Lisa & Maggie'

namelist([ {'name': 'Bart'}, {'name': 'Lisa'} ])
# returns 'Bart & Lisa'

namelist([ {'name': 'Bart'} ])
# returns 'Bart'

namelist([])
# returns ''

Note: all the hashes are pre-validated and will only contain A-Z, a-z, '-' and '.'.

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Given Code

def namelist(names):
    pass

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Solution

def namelist(names):
    if len(names) == 0 : return ""
    elif len(names) == 1 : return names[0]['name']
    else : return ", ".join([names[i]['name'] for i in range(len(names)-1)]) + " & " + names[-1]['name']

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