02 Usage

• 1. creation

  2. d = {"server":"mpilgrim", "database":"master"}

  3. get value of a key

  4. d["database"] # value is 'master'

  5. modify a key value

  6. d["database"] = "pubs" # this dictionary becomes {'server': 'mpilgrim', 'database': 'pubs'}

  7. add new mapping

  8. d["uid"] = "sa" # the uid is a new key, dictionary becomes {'server': 'mpilgrim', 'uid': 'sa', 'database': 'pubs'}

  9. delete

     1. delete a particular mapping: del d[key]. Ex: del d["database"]

     2. delete all mappings: d.clear()

  10. note*: the value can be any type in a same dictionary, and key can be several type too, though key i s restricted to some specific types such as string, number etc.

Reference: http://www.diveintopython.net/native_data_types/index.html#d0e5174