Answer:
# FIXME (1): Prompt for four weights. Add all weights to a list. Output list.
weight_one=float(input('Enter weight 1:\n'))
weight_two=float(input('Enter weight 2:\n'))
weight_three=float(input('Enter weight 3:\n'))
weight_four=float(input('Enter weight 4:\n'))
weights=[weight_one,weight_two,weight_three,weight_four]
print(weights)
# FIXME (2): Output average of weights.
average_weight=(weight_one + weight_two + weight_three + weight_four) / 4
print('Average weight:', "%.2f" % average_weight)
# FIXME (3): Output max weight from list.
weights.sort()
max_weight= weights[3]
print('Max weight:', "%.2f" % max_weight)
# FIXME (4): Prompt the user for a list index and output that weight in pounds and kilograms.
print(input('Enter a list index location (0 - 3):'))
print('Weight in pounds:', weights)
kilograms = float(weights) * 2.2
print('Weight in kilograms:')
# FIXME (5): Sort the list and output it.
weights.sort()
print(weights)
Explanation: