Info Node: (python2.1-ref.info)Dictionary displays
(python2.1-ref.info)Dictionary displays
Dictionary displays
-------------------
A dictionary display is a possibly empty series of key/datum pairs
enclosed in curly braces:
dict_display: "{" [key_datum_list] "}"
key_datum_list: key_datum ("," key_datum)* [","]
key_datum: expression ":" expression
A dictionary display yields a new dictionary object.
The key/datum pairs are evaluated from left to right to define the
entries of the dictionary: each key object is used as a key into the
dictionary to store the corresponding datum.
Restrictions on the types of the key values are listed earlier in
section Note:standard type hierarchy. (To summarize,the key type
should be hashable, which excludes all mutable objects.) Clashes
between duplicate keys are not detected; the last datum (textually
rightmost in the display) stored for a given key value prevails.