python how to make an average code example

Example 1: how to use a function to find the average in python

avreage_cost = cost
    avg = sum(avreage)/len(avreage) 
    print("The average amout you spent is ", round(avg,2))

Example 2: how to find the average in python

import numpy

 avreage_1 = numpy.mean(avreage)# this finds the mean from the array "cost"
    print("words are printed here if needed",avreage_1) # this prints the mean that was found above