The sum of the numbers in the list is required everywhere. Python provides a built-in function sum () that sums the numbers in a list.
sum (iterable, start) iterable: iterable can be anything list, tuples or dictionaries, but most importantly it should be numbers. start : this start is added to the sum of numbers in the iterable. If start is not given in the syntax, it is assumed to be 0.
Two syntaxes are possible:
sum (a) strong> a is the list, it adds up all the numbers in the list a and takes start to be 0, so returning only the sum of the numbers in the list. sum (a, start) this returns the sum of the list + start
Below is the implementation of sum () in Python
Errors and exceptions
error type: this error occurs if the list contains something other than digits.
Traceback (most recent call last): File "/home/23f0f6c9e022aa96d6c560a7eb4cf387.py" , line 6, in Sum = sum (arr) TypeError: unsupported operand type (s) for +: 'int' and' str'
So the list must contain numbers p>
Practical Application: problems when we need to calculate the amount to perform further operations, such as determining the average.