print('==> Bull Kelp and Purple Urchin Population Simulator <==\n') print('--- Model Parameters ---') a = float(input("Kelp growth rate: ")) if a < 0: print("\nError: cannot have a negative growth rate") exit() b=float(input("\nKelp death rate: ")) print("\nError: cannot have a negative death rate") exit() c=float(input("\nUrchin birth rate: ")) print("\nError: cannot have a negative birth rate") exit() d float(input("\nUrchin death rate: ")) if d<0: print("\nError: cannot have a negative death rate") exit() k0 = max(0, float(input())) u0= max(0, float(input())) k = k0 u = U0 if b<0: if c<0: print("\n--- Initial Population ---') print(f"Kelp population (in thousands) at t = 0: ") print(f"Urchin population (in thousands) at t = 0: \n") print('--- Simulation ---') for t in range(2):

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
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I need help with these errors I have with my code how do i fix them. code in python

print('==> Bull Kelp and Purple Urchin Population Simulator <==\n')
print('--- Model Parameters ---')
a float(input("Kelp growth rate: "))
=
if a < 0:
print("\nError: cannot have a negative growth rate")
exit()
b=float(input("\nKelp death rate: "))
print("\nError: cannot have a negative death rate")
exit()
c=float(input("\nUrchin birth rate: "))
print("\nError: cannot have a negative birth rate")
exit()
d=float(input("\nUrchin death rate: "))
print("\nError: cannot have a negative death rate")
exit()
k0 = max(0, float(input()))
u0 = max(0, float(input()))
k = k0
u=u0
if b<0:
if c<0:
if d<0:
print('\n--- Initial Population ---')
print(f"Kelp population (in thousands) at t = 0: ")
print(f"Urchin population (in thousands) at t = 0: \n")
print('--- Simulation ---')
for t in range(2):
print(f"Time t = {t}: {k:.3f}k kelp, {u:.3f}k urchins")
Transcribed Image Text:print('==> Bull Kelp and Purple Urchin Population Simulator <==\n') print('--- Model Parameters ---') a float(input("Kelp growth rate: ")) = if a < 0: print("\nError: cannot have a negative growth rate") exit() b=float(input("\nKelp death rate: ")) print("\nError: cannot have a negative death rate") exit() c=float(input("\nUrchin birth rate: ")) print("\nError: cannot have a negative birth rate") exit() d=float(input("\nUrchin death rate: ")) print("\nError: cannot have a negative death rate") exit() k0 = max(0, float(input())) u0 = max(0, float(input())) k = k0 u=u0 if b<0: if c<0: if d<0: print('\n--- Initial Population ---') print(f"Kelp population (in thousands) at t = 0: ") print(f"Urchin population (in thousands) at t = 0: \n") print('--- Simulation ---') for t in range(2): print(f"Time t = {t}: {k:.3f}k kelp, {u:.3f}k urchins")
Input
Your output
Expected output
1.5
.001
.05
2.5
100
2
==> Bull Kelp and Purple Urchin Population Simulator <==
Kelp growth rate:
Kelp death rate:
Urchin birth rate:
Urchin death rate:
Model Parameters
‒‒‒
Initial Population
Kelp population (in thousands) at t = 0:
Urchin population (in thousands) at t = 0:
- Simulation
Time t =
Time t
=
==> Bull Kelp and Purple Urchin Population Simulator <==
———
0: 100.000k kelp, 2.000k urchins
1: 100.000k kelp, 2.000k urchins
Model Parameters
Kelp growth rate:
Kelp death rate:
Urchin birth rate:
Urchin death rate:
Initial Population
Kelp population (in thousands) at t = 0:
Urchin population (in thousands) at t = 0:
Simulation
Time t
Time t =
=
———
0: 100.000k kelp, 2.000k urchins
1: 249.800k kelp, 7.000k urchins
Transcribed Image Text:Input Your output Expected output 1.5 .001 .05 2.5 100 2 ==> Bull Kelp and Purple Urchin Population Simulator <== Kelp growth rate: Kelp death rate: Urchin birth rate: Urchin death rate: Model Parameters ‒‒‒ Initial Population Kelp population (in thousands) at t = 0: Urchin population (in thousands) at t = 0: - Simulation Time t = Time t = ==> Bull Kelp and Purple Urchin Population Simulator <== ——— 0: 100.000k kelp, 2.000k urchins 1: 100.000k kelp, 2.000k urchins Model Parameters Kelp growth rate: Kelp death rate: Urchin birth rate: Urchin death rate: Initial Population Kelp population (in thousands) at t = 0: Urchin population (in thousands) at t = 0: Simulation Time t Time t = = ——— 0: 100.000k kelp, 2.000k urchins 1: 249.800k kelp, 7.000k urchins
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