Question

Urgent help needed related python ! Thanx

*On average the population increases by 30% each year due to immigration and natural births. * Every 18 years the population is reduced by 40% due to children coming of age and being drafted for football. Year O is considered a draft year. The calculation for draft numbers is done after the calculation for population growth. * Each unit of food is enough to feed a single person for an entire year. * People are allocated their food at the start of each year. If for some reason there isn't enough food for a person they will leave town and go to the city. * Due to many factors, 1/5 of all food must be thrown away at the end of every year before the new food arrives. * Food to feed 80% of the population in the form of meat pies, sausage rolls, and potato cakes arrives at the end of each year after the old food has been thrown away. The food order is placed as the last action for the town for the year. This ensures that the most amount of people are catered for. Normally your simulation should run for 100 years, however if at the start of a year the town's population is 0, the simulation ends early. The starting characteristics of the town should be read from a file called town_start.txt. The ending state of the town should be saved to a file called town_end.txt.

Answer 1

Solution- (Compiled and tested for all test cases)

{YourStudentId}_task3.py

# To read the file
f=open("town_start.txt","r")

# Storing the contents of the file in the variable "contents"
if f.mode == "r":
contents=f.read()
  
# splitting the contents to store food, population, year
contents=contents.split("\n")

food=contents[0]
population=contents[1]
year=contents[2]

# Since population increases by 30% each year
population=int(population)*1.3

#If it is a draft year- population is reduced by 40%
if int(year)%18==0:
population= int(population)*(0.6)
  
#updating the contents with the new values obtained
contents[1]=str(int(population))
contents[2]=str(int(year)+1)
  
# To write into the file
f=open("town_end.txt","w+")
for i in contents:
f.write(i+"\n")

# To close the file
f.close()

Input-

Untitled Telder town startt C Computer Scence question | Che X O localhost8888/edit/Untitled%20Folder/townstart bxt Apps iB Programming Inte. H Dashboard | Hacker.. Java programming complete Python B.. Jupyter town_start.txt 5 minutes ago Logout Edit File View Langusge Plain Text 1 155 2 9e ENG 1928 N Type here to search C (? IN 19-08-2019

Output-

C Computer Science question | Che x Untitled Telder town end.txt O localhost8888/edit/Untitled%20Folder/town end.txt Apps iB Programming Inte. H Dashboard | Hacker.. Java programming complete Python .. Jupyter town_end.txt 5 minutes ago Logout File Edit View Langusge Plain Text 1 155 2 70 1. 4 ENG 1928 N Type here to search C (? IN 19-08-2019

{YourStudentID}_task4.py

# To read the file
f=open("town_start.txt","r")

# Storing the contents of the file in the variable "contents"
if f.mode == "r":
contents=f.read()
  
# splitting the contents to store food, population, year
contents=contents.split("\n")

food=int(contents[0])
population=int(contents[1])
year=int(contents[2])

# simulation for 100 years
for i in range(100):
  
# breaking the loop in case if there are no people
if population==0:
break
  
# condition if food is less than the population, some people leave
if food-population < 0:
population = food
food=0
  
# general consumption
else:
food=food-population   
  
  
# Since population increases by 30% each year
population= int(population*1.3)

# If it is a draft year- population is reduced by 40%
if year%18 == 0:
population= int(population*0.6)
  
  
# Since 1/5th food should be thrown away at the end of each year
food = int(food*(4/5))
  
# food to feed for 80% of the population in the next year
food= int(food+ int(0.8*population))

year=year+1
  
  
#updating the contents with the new values obtained
contents[0]=str(food)
contents[1]=str(population)
contents[2]=str(year)
  
# To write into the file
f=open("town_end.txt","w+")
for i in contents:
f.write(i+"\n")

# To close the file
f.close()

Sample Input-

C Computer Science question | Che x Untitled Telder town startt town end.txt + O localhost8888/edit/Untitled%20Folder/townstart bxt Apps iB Programming Inte.. H Dashboard | Hacker.. Java programming u complete Python B.. Jupyter town start.txt 4 minutes ago Logout Edit File View Language Plain Text 1 100 2 100 ENG 2013 N Type here to search C (? IN 19-08-2019

Sample Output-

Untitled Telder town end.txt C Computer Scence question | Che X x town starttx + O localhost8888/edit/Untitled%20Folder/town end.txt C Apps iB Programming-Inte H Dashboard | Hacker.. Java programming. complete Python .. Jupyter town end.txt 4 minutes ago Logout Edit File View Langusge Plain Text 1 108 2 136 3 180 4 ENG 2013 N Type here to search C (? IN 19-08-2019