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Is python dictionary mutable?
- (*-*)浩Original
- 2019-07-06 10:57:368111browse
Dictionary is another mutable container model and can store any type of object.
Each key-value key=>value pair in the dictionary is separated by colon :, and each key-value pair is separated by comma,. The entire dictionary includes In curly braces {}. (Recommended learning: Python video tutorial) The format of
is as follows:
d = {key1 : value1, key2 : value2 }
keys are generally unique, If the last key-value pair is repeated, it will replace the previous one, and the values do not need to be unique.
>>>dict = {'a': 1, 'b': 2, 'b': '3'}
>>> dict['b']'3'
>>> dict{'a': 1, 'b': '3'}
The value can be of any data type, but the key must be immutable, such as a string, number, or tuple.
A simple dictionary example:
dict = {'Alice': '2341', 'Beth': '9102', 'Cecil': '3258'}
You can also create a dictionary like this:
dict1 = { 'abc': 456 }
dict2 = { 'abc': 123, 98.6: 37 }
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