They are two examples of sequence data types (see Sequence Types â str, unicode, list, tuple, bytearray, buffer, xrange). Since Python is an evolving language, other sequence data types may be added. There is also another standard sequence data type: the tuple.
When to take medicine: NSAIDs, such as naproxen and ibuprofen, are the most widely used medications for osteoarthritis. According to French researchers, it's best to take them four to six hours before the pain is at its worst, so that they'll kick in at the appropriate time.
Good indication of therapeutic half-life is how often you have to take them - if it's every 3 hrs, then they're obviously metabolised fairly quickly, if only once a day, less so. I'd leave at least 24h after the last dose before you start doing contra-indicated things.