Examples
--------
- >>> patterns = {"John" : "Luke",
- ... "Jane" : "Anakin",
- ... "Doe" : "Skywalker",
- ... "Z6PO" : "R2D2"}
- >>> data = "Users are: John Doe, Jane Doe, Z6PO."
+ >>> patterns = {'John' : 'Luke',
+ ... 'Jane' : 'Anakin',
+ ... 'Doe' : 'Skywalker',
+ ... 'Z6PO' : 'R2D2'}
+ >>> data = 'Users are: John Doe, Jane Doe, Z6PO.'
>>> replace(data,patterns )
u'Users are: Luke Skywalker, Anakin Skywalker, R2D2.'
"""