# Program to calculate the average of 7 numbers
# using a function call. The input numbers are 
# defined as a list.

# our function 'avg' is defined here
def avg(nums):
    sum = 0.0
    for i in range(len(nums)):
       sum = sum + nums[i]
    average = sum/len(nums)
    return average


# Main program begins here.

nums = [8.2, 4.5, 7.3, 7, 56.0, 7.9, 100.4]
result = avg( nums )

print("The mean value is : ", result)