Sample banner function in Python

'*' * (len(x) + 4); "+ " + x + " *"; '*' * (len(x) + 4)

Example:

>>> x = "banner"
>>> '*' * (len(x) + 4); "* " + x + " *"; '*' * (len(x) + 4)
'**********'
'* banner *'
'**********'
>>>
>>>
>>> x = "a much longer banner"
>>> '*' * (len(x) + 4); "* " + x + " *"; '*' * (len(x) + 4)
'************************'
'* a much longer banner *'
'************************'