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In this tutorial we under to discuss about dictionary methods the dictionary clear method is used to

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delete all of the items in the dictionary so it clears a dictionary next.

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The get method the get method returns the value for a key if it exists in the dictionary so let's check

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this in the Jupiter notebook.

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We have discussed before that if we want to retrieve or access any value in a dictionary we can parse

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the corresponding key in square brackets like this.

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So if we pass the key a one it retrieves the corresponding value that has been mapped to a 1.

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Apart from this we also had the get method using the get method we can access these values in the dictionary.

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So in order to apply the get method on the dictionary dict to 1.

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This is defined my dict one dot get and the argument is the key that you want to access in the dictionary.

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So I want to access the value corresponding to the key a 2.

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So let's execute this.

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So this is the value that has been mapped to the key A2 frozen foods.

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Say for example you pass a key that is not present.

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That is not existing in the dictionary so letters was b to as the key and execute it the get method

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does not find the key that has been passed as an argument in the dictionary dict 1.

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It does not raise an edit but it returns None.

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Dickey is not found we can pass an optional argument that is returned.

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If the key is not found in the dictionary in the get method.

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So let's see this dict one board get and let us specify the key is B to and the optional argument would

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be C minus one.

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If the value is not found they get method would at dawn this value.

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The default value select execute this line of code.

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So since Dicky B2 is not found do you get method returns the default value minus 1.

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So in this case Python does not raise an exception but if you try to access any of the values using

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the square brackets say for example let's pass the key B 2 which is not present in dict 1.

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Here Python raises an exception which is the key error since B2 is not present in the dict 1 dictionary.

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The next method is the items matter the items method returns a list of key value pairs in our dictionary.

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So this is the format for the items method D door items.

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So once you execute this then this is the output.

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Here is a list of the items in the dictionary dict 1 and as you can see here the items method returns

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a list of tuples containing the key value PEDs in the dictionary dict 1 and the first item in each tuple

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is the key and the second item is the value and we have the method keys and use the keys method returns

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a list of keys in a dictionary whereas the right use method returns a list of values in a dictionary.

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This is how you apply keys method on the dictionary.

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It has written a list of keys that are present in this dictionary.

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Similarly we have the values method which returns a list of values that are present in the dictionary.

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The one next is the pop method.

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The part method removes a key from a dictionary.

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If it is present and returns it value so I am now calling the pop method on the dictionary dict 1 and

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in passing the key a 4 so pop method is going to remove this entry from the dictionary Dec. 1.

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Let us now display the dictionary dict one as you can see a Ford has been removed from the dictionary

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say for example we want to pop an item which is not present in the dictionary say very positive key

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B to which does not exist in the dictionary dict 1.

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So the Bob method returns the exception key error the can also pass a default value that would be returned

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if the key is not existing in the dictionary similar to what we have been in the get method so dict

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one DA Bob let pass be 2 which is not existing in the dictionary and let's see if it does not find this

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value though output should be minus 1 so instead of raising an exception or throwing an error the pop

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method returns the default value minus one that we have past as an argument.

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Next is the pop item method it removes a key value pair from a dictionary.

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So when you call depart by the method on a dictionary the method pop item removed as a random or arbitrary

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key value pair from the dictionary so if 5 has been removed the key a 5 it now only has the dictionary

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dict one only has three keys a one a two and a three next as the update method the update method is

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used to march or dictionary but another dictionary or with an eye dribble of key while you bet.

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Say for example I want to march the dictionary is dict 1 and 2 using the update method.

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So in this case you need to parse the dick to dictionary as an argument to the update method let's execute

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this line and then check if the dictionary dict 1 has been updated.

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OK as you can see the key value pairs in the dictionary d 2 has been added to dictionary dict 1.

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Say for example if a key is present in both the dictionary is dict 1 and Dec. 2.

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In that case the corresponding value indicate one for that key is updated to the value from dict 2.

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You can use the delete statement to delete any of your own key value pairs from a dictionary.

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So let's say you want to delete the key rate from the dictionary dict 1 so you can use the delete.

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Let's just play one so here you have the updated dictionary dict one bit with the key weight delete

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it we can use the Lent function to know the land of the dictionary so let's parse dict 1 to the length

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function.

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So there are seven keys in this dictionary.

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So the length function has returned seven and this brings us to the end of the topic.

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Dictionary methods.