Is python dictionary mutable?

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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