Sequential Processing Examples

Each example uses this input file
numbers.txt:
3.5
5.5
2.5
1.0
0.0


# Example 1.  Compute the sum:

fin = open("numbers.txt", "r")
line = fin.readline( )
sum = 0.0
while line != "":
    value = float(line.strip( ))
    sum += value
    line = fin.readline( )

print("Sum: ", sum)


# Example 2. Compute the average:

fin = open("numbers.txt", "r")
line = fin.readline( )
sum = 0.0
count = 0
while line != "":
    value = float(line.strip( ))
    sum += value
    count += 1
    line = fin.readline( )

print("Average: ", sum / count)


# Example 3. Compute the maximum 
             (assumes at least one input value):
             
fin = open("numbers.txt", "r")
line = fin.readline( )
value = float(line.strip( ))
maximum = value
line = fin.readline( )
while line != "":
    value = float(line.strip( ))
    maximum = max(maximum, value)
    line = fin.readline( )

print("Maximum: ", maximum)

Practice Problem.  Write a script that finds
                   the minimum value.