syntax to define dictionary is,

In above definition, "dict_example" is the variable name of the dictionary. fruit, vegetable, animal are the keys of the dictionary(dict_example) and cherry, tomato, tiger are the respective values of the keys.

By using print() method, we can print variables in python, so to print dictionary we use print() method

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output:  {'fruit': 'cherry', 'vegetable': 'tomato', 'animal': 'tiger'}

We can print the value of particular key,

      dict[key] will give the value of that key

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output:    tomato

'tomato' is the value of 'vegetable' key in dict_example.

We can use get() method to access item

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output:  tiger

We can change the value of particular key, by simply assigning value to the key

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{'fruit': 'cherry', 'vegetable': 'tomato', 'animal': 'lion'}

As we understand, each item in the dictionary is a key:value pair, If we want to insert new item into the dictionary we want to insert key and value like below

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Output : {'fruit': 'cherry', 'vegetable': 'tomato', 'animal': 'tiger', 'flower': 'rose'}

'flower' is the key, 'rose' is the value for that key

we can delete whole dictionary or single item by using 'del' keyword

Deleting whole dictionary

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Output : NameError: name 'dict_example' is not defined

In the above output we got NameError while printing 'dict_example' because we deleted 'dict_example' in previous line 

Deleting specified item in dictionary with 'del' keyword

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Output : {'fruit': 'cherry', 'vegetable': 'tomato'}

In the above example we deleted the item 'animal'

Deleting specified item in dictionary with pop() method

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Output : {'fruit': 'cherry', 'vegetable': 'tomato'}

popitem() will remove last inserted item in the dictionary

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Output : {'fruit': 'cherry', 'vegetable': 'tomato'}

clear() method will remove the all items in the dictionary

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Output : {}