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I have a dictionary which has value as a list.
dictionary = { 'C1' : [10,20,30] 'C2' : [20,30,40] } Let's say I want to increment all the values in list of C1 by 10, how do I do it?
dictionary.get('C1') gives me the list but how do i update it?
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Method 1: Using append() function The append function is used to insert a new value in the list of dictionaries, we will use pop() function along with this to eliminate the duplicate data. Syntax: dictionary[row]['key']. append('value')
Python Dictionary update()The update() method updates the dictionary with the elements from another dictionary object or from an iterable of key/value pairs.
It definitely can have a list and any object as value but the dictionary cannot have a list as key because the list is mutable data structure and keys cannot be mutable else of what use are they.
A list can contain another list. A dictionary can contain another dictionary. A dictionary can also contain a list, and vice versa.
>>> dictionary = {'C1' : [10,20,30],'C2' : [20,30,40]} >>> dictionary['C1'] = [x+1 for x in dictionary['C1']] >>> dictionary {'C2': [20, 30, 40], 'C1': [11, 21, 31]} If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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