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Since

The argument required by both functions is any iterable object: a list, a tuple, etc.

# How to Calculate the Average of a Group of Numbers

The`statistics`

standard module provides the `mean()`

function for this.`>>> from statistics import mean`

>>> mean([4, 2, 9, 15])

7.5

Since

`statistics`

was first introduced in Python 3.4, previous versions can simply define the function as follows.`def mean(it):`

return sum(it) / len(it)

The argument required by both functions is any iterable object: a list, a tuple, etc.