you will be identifying which organisms are the tastiest. The tastiest organisms are the ones that appear the most times as a food source. For example if aquatic.txt was the input file, file_list will be: ["Bird,Prawn,Mussels,Crab,Limpets,Whelk\n", "Crab,Mussels,Limpets\n", "Fish,Prawn\n", "Limpets,Seaweed\n", "Lobster,Crab,Mussels,Limpets,Whelk\n", "Mussels,Phytoplankton,Zooplankton\n", "Prawn,Zooplankton\n", "Whelk,Limpets,Mussels\n", "Zooplankton,Phytoplankton"] Limpets and mussels appear the most times as a food source, making them the tastiest organisms. Here is a sample output using aquatic.txt: Enter the food web file name: aquatic.txt Predators and Prey: Bird eats Crab, Limpets, Mussels, Prawn, and Whelk Crab eats Limpets and Mussels Fish eats Prawn Limpets eats Seaweed Lobster eats Crab, Limpets, Mussels, and Whelk Mussels eats Phytoplankton and Zooplankton Prawn eats Zooplankton Whelk eats Limpets and Mussels Zooplankton eats Phytoplankton Apex Predators: Bird, Fish, and Lobster Producers: Phytoplankton and Seaweed Most Flexible Eaters: Bird Tastiest: Limpets and Mussels Once again, each animal is sorted alphabetically. my code: # TODO: Write your header comment here. # DO NOT REMOVE file_name = input("Enter the food web file name: ") raw_file = open(file_name) file_list = raw_file.readlines() raw_file.close() file_list = [line.strip() for line in file_list] print("\n\nPredators and Prey:") all_prey = [] all_predators = [] predator_prey_count = {} prey_predator_count = {} tastiest_prey = [] for line in file_list: animals = line.split(',') predator = animals[0] all_predators.append(predator) predator = animals[0] prey = animals[1:] prey.sort() all_prey += prey predator_prey_count[predator] = len(prey) # prey_predator_count[prey] = len(predator) output = " " + predator + " eats " for i in range(len(prey)): if len(prey) == 1: output += prey[i] elif i == 0: output += prey[i] elif i == len(prey) - 1 and len(prey) -1 > 1: output += ", and " + prey[i] elif i == len(prey)-1 and len(prey) -1 == 1: output += " and " + prey[i] else: output += ", " + prey[i] prey_predator_count[prey] = len(predator) print(output) apex_predators = [predator for predator in all_predators if predator not in all_prey] apex_predators.sort() print("\nApex Predators:", end=" ") if len(apex_predators) == 1: print(apex_predators[0]) elif len(apex_predators) == 2: print(f"{apex_predators[0]} and {apex_predators[1]}") else: for i in range(len(apex_predators) - 1): print(apex_predators[i], end=", ") print(f"and {apex_predators[-1]}") producers = list(set(all_prey) - set(all_predators)) producers.sort() print("Producers:", end=" ") for i in range(len(producers)): if i == len(producers) - 1: print(f"{producers[i]}") else: print(producers[i], end=" and ") max_prey_count = 0 for predator, count in predator_prey_count.items(): if count > max_prey_count: max_prey_count = count most_flexible_eaters = [] for predator, count in predator_prey_count.items(): if count == max_prey_count: max_prey_count = count most_flexible_eaters.append(predator) most_flexible_eaters.sort() print("Most Flexible Eaters:", end=" ") if len(most_flexible_eaters) == 1: print(most_flexible_eaters[0]) elif len(most_flexible_eaters) == 2: print(f"{most_flexible_eaters[0]} and {most_flexible_eaters[1]}") else: for i in range(len(most_flexible_eaters) - 1): print(most_flexible_eaters[i], end=", ") print(f"and {most_flexible_eaters[-1]}") for predator, count in prey_predator_count.items(): if count == max_prey_count: max_prey_count = count tastiest_prey.append(prey) tastiest_prey.sort() print("Tastiest:", end = " ") if len(tastiest_prey) == 1: print(tastiest_prey[0]) elif len(tastiest_prey) == 2: print(f"{tastiest_prey[0]} and {tastiest_prey[1]}") else: for i in range(len(tastiest_prey) - 1): print(tastiest_prey[i], end = ", ") print(f"and {tastiest_prey[-1]}")

you will be identifying which organisms are the tastiest. The tastiest organisms are the ones that appear the most times as a food source. For example if aquatic.txt was the input file, file_list will be: ["Bird,Prawn,Mussels,Crab,Limpets,Whelk\n", "Crab,Mussels,Limpets\n", "Fish,Prawn\n", "Limpets,Seaweed\n", "Lobster,Crab,Mussels,Limpets,Whelk\n", "Mussels,Phytoplankton,Zooplankton\n", "Prawn,Zooplankton\n", "Whelk,Limpets,Mussels\n", "Zooplankton,Phytoplankton"] Limpets and mussels appear the most times as a food source, making them the tastiest organisms. Here is a sample output using aquatic.txt: Enter the food web file name: aquatic.txt Predators and Prey: Bird eats Crab, Limpets, Mussels, Prawn, and Whelk Crab eats Limpets and Mussels Fish eats Prawn Limpets eats Seaweed Lobster eats Crab, Limpets, Mussels, and Whelk Mussels eats Phytoplankton and Zooplankton Prawn eats Zooplankton Whelk eats Limpets and Mussels Zooplankton eats Phytoplankton Apex Predators: Bird, Fish, and Lobster Producers: Phytoplankton and Seaweed Most Flexible Eaters: Bird Tastiest: Limpets and Mussels Once again, each animal is sorted alphabetically. my code: # TODO: Write your header comment here. # DO NOT REMOVE file_name = input("Enter the food web file name: ") raw_file = open(file_name) file_list = raw_file.readlines() raw_file.close() file_list = [line.strip() for line in file_list] print("\n\nPredators and Prey:") all_prey = [] all_predators = [] predator_prey_count = {} prey_predator_count = {} tastiest_prey = [] for line in file_list: animals = line.split(',') predator = animals[0] all_predators.append(predator) predator = animals[0] prey = animals[1:] prey.sort() all_prey += prey predator_prey_count[predator] = len(prey) # prey_predator_count[prey] = len(predator) output = " " + predator + " eats " for i in range(len(prey)): if len(prey) == 1: output += prey[i] elif i == 0: output += prey[i] elif i == len(prey) - 1 and len(prey) -1 > 1: output += ", and " + prey[i] elif i == len(prey)-1 and len(prey) -1 == 1: output += " and " + prey[i] else: output += ", " + prey[i] prey_predator_count[prey] = len(predator) print(output) apex_predators = [predator for predator in all_predators if predator not in all_prey] apex_predators.sort() print("\nApex Predators:", end=" ") if len(apex_predators) == 1: print(apex_predators[0]) elif len(apex_predators) == 2: print(f"{apex_predators[0]} and {apex_predators[1]}") else: for i in range(len(apex_predators) - 1): print(apex_predators[i], end=", ") print(f"and {apex_predators[-1]}") producers = list(set(all_prey) - set(all_predators)) producers.sort() print("Producers:", end=" ") for i in range(len(producers)): if i == len(producers) - 1: print(f"{producers[i]}") else: print(producers[i], end=" and ") max_prey_count = 0 for predator, count in predator_prey_count.items(): if count > max_prey_count: max_prey_count = count most_flexible_eaters = [] for predator, count in predator_prey_count.items(): if count == max_prey_count: max_prey_count = count most_flexible_eaters.append(predator) most_flexible_eaters.sort() print("Most Flexible Eaters:", end=" ") if len(most_flexible_eaters) == 1: print(most_flexible_eaters[0]) elif len(most_flexible_eaters) == 2: print(f"{most_flexible_eaters[0]} and {most_flexible_eaters[1]}") else: for i in range(len(most_flexible_eaters) - 1): print(most_flexible_eaters[i], end=", ") print(f"and {most_flexible_eaters[-1]}") for predator, count in prey_predator_count.items(): if count == max_prey_count: max_prey_count = count tastiest_prey.append(prey) tastiest_prey.sort() print("Tastiest:", end = " ") if len(tastiest_prey) == 1: print(tastiest_prey[0]) elif len(tastiest_prey) == 2: print(f"{tastiest_prey[0]} and {tastiest_prey[1]}") else: for i in range(len(tastiest_prey) - 1): print(tastiest_prey[i], end = ", ") print(f"and {tastiest_prey[-1]}")

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

you will be identifying which organisms are the tastiest. The tastiest organisms are the ones that appear the most times as a food source.

For example if aquatic.txt was the input file, file_list will be:

["Bird,Prawn,Mussels,Crab,Limpets,Whelk\n", "Crab,Mussels,Limpets\n", "Fish,Prawn\n", "Limpets,Seaweed\n", "Lobster,Crab,Mussels,Limpets,Whelk\n", "Mussels,Phytoplankton,Zooplankton\n", "Prawn,Zooplankton\n", "Whelk,Limpets,Mussels\n", "Zooplankton,Phytoplankton"]

Limpets and mussels appear the most times as a food source, making them the tastiest organisms.

Here is a sample output using aquatic.txt:

Enter the food web file name: aquatic.txt

Predators and Prey: Bird eats Crab, Limpets, Mussels, Prawn, and Whelk Crab eats Limpets and Mussels Fish eats Prawn Limpets eats Seaweed Lobster eats Crab, Limpets, Mussels, and Whelk Mussels eats Phytoplankton and Zooplankton Prawn eats Zooplankton Whelk eats Limpets and Mussels Zooplankton eats Phytoplankton

Apex Predators: Bird, Fish, and Lobster

Producers: Phytoplankton and Seaweed

Most Flexible Eaters: Bird

Tastiest: Limpets and Mussels

Once again, each animal is sorted alphabetically.

my code:

# TODO: Write your header comment here.

# DO NOT REMOVE

file_name = input("Enter the food web file name: ")

raw_file = open(file_name)

file_list = raw_file.readlines()

raw_file.close()

file_list = [line.strip() for line in file_list]

print("\n\nPredators and Prey:")

all_prey = []

all_predators = []

predator_prey_count = {}

prey_predator_count = {}

tastiest_prey = []

for line in file_list:

animals = line.split(',')

predator = animals[0]

all_predators.append(predator)

predator = animals[0]

prey = animals[1:]

prey.sort()

all_prey += prey

predator_prey_count[predator] = len(prey)

# prey_predator_count[prey] = len(predator)

output = " " + predator + " eats "

for i in range(len(prey)):

if len(prey) == 1:

output += prey[i]

elif i == 0:

output += prey[i]

elif i == len(prey) - 1 and len(prey) -1 > 1:

output += ", and " + prey[i]

elif i == len(prey)-1 and len(prey) -1 == 1:

output += " and " + prey[i]

else:

output += ", " + prey[i]

prey_predator_count[prey] = len(predator)

print(output)

apex_predators = [predator for predator in all_predators if predator not in all_prey]

apex_predators.sort()

print("\nApex Predators:", end=" ")

if len(apex_predators) == 1:

print(apex_predators[0])

elif len(apex_predators) == 2:

print(f"{apex_predators[0]} and {apex_predators[1]}")

else:

for i in range(len(apex_predators) - 1):

print(apex_predators[i], end=", ")

print(f"and {apex_predators[-1]}")

producers = list(set(all_prey) - set(all_predators))

producers.sort()

print("Producers:", end=" ")

for i in range(len(producers)):

if i == len(producers) - 1:

print(f"{producers[i]}")

else:

print(producers[i], end=" and ")

max_prey_count = 0

for predator, count in predator_prey_count.items():

if count > max_prey_count:

max_prey_count = count

most_flexible_eaters = []

for predator, count in predator_prey_count.items():

if count == max_prey_count:

max_prey_count = count

most_flexible_eaters.append(predator)

most_flexible_eaters.sort()

print("Most Flexible Eaters:", end=" ")

if len(most_flexible_eaters) == 1:

print(most_flexible_eaters[0])

elif len(most_flexible_eaters) == 2:

print(f"{most_flexible_eaters[0]} and {most_flexible_eaters[1]}")

else:

for i in range(len(most_flexible_eaters) - 1):

print(most_flexible_eaters[i], end=", ")

print(f"and {most_flexible_eaters[-1]}")

for predator, count in prey_predator_count.items():

if count == max_prey_count:

max_prey_count = count

tastiest_prey.append(prey)

tastiest_prey.sort()

print("Tastiest:", end = " ")

if len(tastiest_prey) == 1:

print(tastiest_prey[0])

elif len(tastiest_prey) == 2:

print(f"{tastiest_prey[0]} and {tastiest_prey[1]}")

else:

for i in range(len(tastiest_prey) - 1):

print(tastiest_prey[i], end = ", ")

print(f"and {tastiest_prey[-1]}")

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