Python sum() function

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The sum() function takes an iterable and returns the sum of items in it.


iterable(required) Iterable item like string, list, dictionary etc.
start(optional) An optional numeric value added to the final result. It defaults to 0.

The sum()  function only works with numerical values, trying to use it with non-numeric type will result in an error.

Here is an example:

In the last command, the sum() adds the keys in the dictionary, ignoring its values.

Here is another example, which specifies the start value to be added to the final result.

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