List of List into List

[mp3909]

I was just practicing some stuff on list comprehensions and wanted to see how you go about using list comprehensions to create a single list from a list of list where at least one of the elements in the list is not necessarily an element within a sub-list

For example, it was easy for me to create a single list using list comprehension from the following list [['Tokyo','London'],['Madrid','Paris']], you could simply do:

>>>oList= [['Tokyo','London'],['Madrid','Paris']]
>>>newList = [item for sublist in oList for item in sublist]
>>>newList
['Tokyo', 'London', 'Madrid', 'Paris']

but how would you go about using list comprehensions to create a single list when you have a list like this ['Tokyo','London',['Madrid','Paris']] - makes the problem a little more difficult because using the above approach yields the following result (which is wrong):

>>> oList = ['Tokyo','London',['Madrid','Paris']]
>>> newList = [item for sublist in oList for item in sublist]
>>> newList
['T', 'o', 'k', 'y', 'o', 'L', 'o', 'n', 'd', 'o', 'n', 'Madrid', 'Paris']

I hope that clarifies my problem and would appreciate it if anyone out there knows how to solve this using list comprehensions.
Thank You.