Answered! Part B: The second task is to write that output to a file. The steps are 1. Open a file for writing, e.g. outfile = open(“output.txt”,”w”)…

Code:
#!/usr/local/bin/python3

# program to calculate BMI

def main():
# opening the file data.txt
with open(“data.txt”) as fp:
# initializing the variables
(max_weight, min_weight, sum_weight, avg_weight) = (0, 10**9, 0, 0)
(max_height, min_height, sum_height, avg_height) = (0, 10**9, 0, 0)
(max_bmi, min_bmi, sum_bmi, avg_bmi) = (0, 10**9, 0, 0)
n = 0
for line in fp:
# printing the header
if ‘Name’ in line:
print (“{:<12s} {:<12s} {:<12s} {:<12s}”.format(‘Name’, ‘Height(m)’, ‘Weight(kg)’, ‘BMI’))
else:
# splitting the line from file and storing into variables
(name, height, weight) = line.split()

# converting weight and height as float variables
weight = float(weight)
height = float(height)

# identifying max and min from the weight numbers
if weight > max_weight:
max_weight = weight
if weight < min_weight:
min_weight = weight
sum_weight = sum_weight + weight

# identifying max and min from the height numbers
if height > max_height:
max_height = height
if height < min_height:
min_height = height
sum_height = sum_height + height

# calculating bmi and identifying min and max from the bmi numbers
bmi = weight / height ** 2
if bmi > max_bmi:
max_bmi = bmi
if bmi < min_bmi:
min_bmi = bmi
sum_bmi = sum_bmi + bmi

n = n + 1
print (“{:<12s} {:<12.2f} {:<12.2f} {:<12.2f}”.format(name, height, weight, bmi))

# calculating average weight, height and bmi
avg_weight = sum_weight / n
avg_height = sum_height / n
avg_bmi = sum_bmi / n
print (“n”)

# printing average, max, min statistics
print (“{:<12s} {:<12.2f} {:<12.2f} {:<12.2f}”.format(‘Average’, avg_height, avg_weight, avg_bmi))
print (“{:<12s} {:<12.2f} {:<12.2f} {:<12.2f}”.format(‘Max’, max_height, max_weight, max_bmi))
print (“{:<12s} {:<12.2f} {:<12.2f} {:<12.2f}”.format(‘Min’, min_height, min_weight, min_bmi))

fp.close()

if __name__==’__main__’:
main()

Execution and output:
Unix Terminal> cat data.txt
Name   Height(m)   Weight(kg)
Joe   1.82   72.57
Mary   1.60   63.50
Dion   1.90   90.71
Kayla   1.72    66.31
Jose   1.78   70.23
Sofia   1.63   65.12
Eric   1.98   92.21
Sara   1.57   65.77
Unix Terminal> python3 lab06a.py
Name Height(m) Weight(kg) BMI
Joe 1.82 72.57 21.91
Mary 1.60 63.50 24.80
Dion 1.90 90.71 25.13
Kayla 1.72 66.31 22.41
Jose 1.78 70.23 22.17
Sofia 1.63 65.12 24.51
Eric 1.98 92.21 23.52
Sara 1.57 65.77 26.68

Average 1.75 73.30 23.89
Max 1.98 92.21 26.68
Min 1.57 63.50 21.91

PART B:
Code:
#!/usr/local/bin/python3

# program to calculate BMI
# script name: lab06b.py

def main():
# opening the file out.txt for writing the output
outfile = open(“output.txt”, “w”)

# opening the file data.txt for reading
with open(“data.txt”) as fp:
# initializing the variables
(max_weight, min_weight, sum_weight, avg_weight) = (0, 10**9, 0, 0)
(max_height, min_height, sum_height, avg_height) = (0, 10**9, 0, 0)
(max_bmi, min_bmi, sum_bmi, avg_bmi) = (0, 10**9, 0, 0)
n = 0
for line in fp:
# printing the header
if ‘Name’ in line:
print (“{:<12s} {:<12s} {:<12s} {:<12s}”.format(‘Name’, ‘Height(m)’, ‘Weight(kg)’, ‘BMI’), file=outfile)
else:
# splitting the line from file and storing into variables
(name, height, weight) = line.split()

# converting weight and height as float variables
weight = float(weight)
height = float(height)

# identify max and min from the weight numbers
if weight > max_weight:
max_weight = weight
if weight < min_weight:
min_weight = weight
sum_weight = sum_weight + weight

# identifying max and min from the height numbers
if height > max_height:
max_height = height
if height < min_height:
min_height = height
sum_height = sum_height + height

# calculating bmi and identifying min and max from the bmi numbers
bmi = weight / height ** 2
if bmi > max_bmi:
max_bmi = bmi
if bmi < min_bmi:
min_bmi = bmi
sum_bmi = sum_bmi + bmi

n = n + 1
print (“{:<12s} {:<12.2f} {:<12.2f} {:<12.2f}”.format(name, height, weight, bmi), file=outfile)

# calculating average weight, height and bmi
avg_weight = sum_weight / n
avg_height = sum_height / n
avg_bmi = sum_bmi / n
print (“n”, file=outfile)

# printing average, max, min statistics
print (“{:<12s} {:<12.2f} {:<12.2f} {:<12.2f}”.format(‘Average’, avg_height, avg_weight, avg_bmi), file=outfile)
print (“{:<12s} {:<12.2f} {:<12.2f} {:<12.2f}”.format(‘Max’, max_height, max_weight, max_bmi), file=outfile)
print (“{:<12s} {:<12.2f} {:<12.2f} {:<12.2f}”.format(‘Min’, min_height, min_weight, min_bmi), file=outfile)

fp.close()
outfile.close()

if __name__==’__main__’:
main()

Execution and output:
Unix Terminal> python3 lab06b.py
Unix Terminal> cat output.txt
Name Height(m) Weight(kg) BMI
Joe 1.82 72.57 21.91
Mary 1.60 63.50 24.80
Dion 1.90 90.71 25.13
Kayla 1.72 66.31 22.41
Jose 1.78 70.23 22.17
Sofia 1.63 65.12 24.51
Eric 1.98 92.21 23.52
Sara 1.57 65.77 26.68

Average 1.75 73.30 23.89
Max 1.98 92.21 26.68
Min 1.57 63.50 21.91
Unix Terminal>