Add a new item to a dictionary in Python

Question

I want to add an item to an existing dictionary in Python  For example  this is my dictionary   default data                  item1   1               item2   2      I want to add a new item such that   default data   default data     item3  3    How can I achieve this

User · Answer

It can be as simple as   default data  item3     3   As Chris  answer says  you can use update to add more than one item   An example   default data update   item4   4   item5   5     Please see the documentation about dictionaries as data structures and dictionaries as built-in types

User · Answer

It occurred to me that you may have actually be asking how to implement the   operator for dictionaries  the following seems to work    gt  gt  gt  class Dict dict           def   add   self  other               copy   self copy               copy update other              return copy         def   radd   self  other               copy   other copy               copy update self              return copy       gt  gt  gt  default data   Dict   item1   1   item2   2    gt  gt  gt  default data     item3   3    item2   2   item3   3   item1   1   gt  gt  gt    test1   1    Dict test2 2    test1   1   test2   2    Note that this is more overhead then using dict key    value or dict update    so I would recommend against using this solution unless you intend to create a new dictionary anyway

User · Answer

default data  item3     3   Easy as py   Another possible solution   default data update   item3   3     which is nice if you want to insert multiple items at once

[python] Add a new item to a dictionary in Python

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