Update Method Of Counter Class

Method Name:

update

 

Method Signature:

update(itearableObjectOrMappingObject)

 

Method Overview:

  • update() is like the add() counterpart of the subtract method.

 

  • update() takes a python iterable object or a mapping object and adds the counts of elements present in the iterable/mapping object to the counts of elements present in the counter object.

 

Example:

import collections

 

counterObject = collections.Counter({"z":9,"y":8,"x":7})

print("Counter object before update:")

print(counterObject)

counterObject.update({"z":1,"y":2})

print("Counter object after update:")

print(counterObject)

 

 

Output:

Counter object before update:

Counter({'z': 9, 'y': 8, 'x': 7})

Counter object after update:

Counter({'z': 10, 'y': 10, 'x': 7})

 

 


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