Question

It's Python :D

Write a program that does the following:

• Allow the user to specify the name of an input file containing voter participation data (that way, different data files can be tested).
• Read the data from the file and write a report out to a new file as follows:
  • The name of the output file should be the name of the input file preceded with the word 'REPORT-'. So, if the input file is named 'PresidentialElections.txt', then the output file should be named 'REPORT-PresidentialElections.txt', but if the input file is named 'MidTermElections.txt', then the output file should be named 'REPORT-MidTermElections.txt', etc. Your program should work with any properly formatted data file -- not just the two listed here.
  • The report should include one line for each year in the data file. The line should show a sentence containing the year, the percentage of eligible voters who registered, and the percentage of eligible voters who cast ballots (voted). The percentages should be rounded to two places after the decimal point. Here is an example of what the first part of the output file would look like for the data shown above:

In 1952, 90.81% registered and 72.80% voted. In 1956, 89.45% registered and 71.75% voted. ...

• Finally, show the following information in the Python shell window in a nicely-formatted, easy to understand report:
  • the total number of years listed
  • the total number of ballots cast in all those years
  • the average percentage of eligible voters who registered
  • the number of years with less than 60% of registered voters casting ballots
  • the percentage of years with more than 80% of registered voters casting ballots
  • A sentence showing the name of the report file

Here is an example of what the report would look like for the first file:

The total number of years listed: 17 Total ballots cast in all these years: 34,436,792 Average percentage of eligible voters registered: 79.55% Number of years with less than 60% of registered voters casting ballots: 0 Percentage of years with more than 80% of registered voters casting ballots: 47.1% An output file named REPORT-PresidentialElections.txt has been created.

Presidential Election txt file as follows:

1952 1533500 1392594 1116414 1956 1622500 1451375 1164104 1960 1753700 1527510 1257952 1964 1857900 1582046 1276956 1968 1975000 1649734 1310942 1972 2306000 1974849 1519771 1976 2546000 2065378 1584590 1980 2992000 2236603 1722904 1984 3182000 2457667 1931546 1988 3417000 2499309 1923043 1992 3818000 2814680 2324907 1996 4122000 3078208 2293895 2000 4368000 3335714 2517028 2004 4646000 3508208 2884783 2008 5010844 3630118 3071587 2012 5221125 3904959 3172930 2016 5557921 4270270 3363440

Mid Term election txt as follows:

1958 1703200 1375035 978400 1962 1813500 1446593 971706 1966 1869400 1472054 987134 1970 2078000 1562916 1123000 1974 2419000 1896214 1044425 1978 2651000 1960900 1028854 1982 3119000 2105563 1404831 1986 3307000 2230354 1358160 1990 3650000 2225101 1362651 1994 4000000 2896519 1733471 1998 4257000 3119562 1939421 2002 4519000 3209648 1808720 2006 4821000 3264511 2107370 2010 5149729 3601268 2565589 2014 5376986 3922248 2124330

Answer 1

CODE:

infile = input('Enter input file name : ')

fh = open(infile,'r')

outfile = "REPORT-"+infile

fh2 = open(outfile,'w')

year_list,total_list,register_list,voted_list=[],[],[],[]

for line in fh.readlines():
    year,total,register,voted = list(map(int,line.split()))
    year_list.append(year)
    total_list.append(total)
    register_list.append(register)
    voted_list.append(voted)
    
print()  
print('The total numbers of years listed:',len(year_list))
print()
print('Total ballots cast in all these years:',sum(voted_list))
print()
eligible = sum(voted_list)/sum(register_list)*100
print('Average percentage of eligible voters registered:',round(eligible,2),'%')
print()
year60 = 0
year80 = 0

for i in range(len(year_list)):
    reg_per = round(register_list[i]/total_list[i]*100,2)
    vote_per = round(voted_list[i]/total_list[i]*100,2)
    eligible = voted_list[i]/register_list[i]*100
    if eligible < 60: year60 += 1
    if eligible > 80: year80 += 1
    fh2.write('In '+str(year_list[i])+' , '+str(reg_per)+' % registered and '+str(vote_per)+' % voted.\n')
    
print('Number of years with less than 60% of registered voters casting ballots:',year60)
print()
print('Percentage of years with more than 80% of registered voters casting ballots:',round(year80/len(year_list)*100,1),'%')
print()
print('An output file named REPORT-PresidentialElections.txt has been created.')
fh.close()
fh2.close()

OUTPUT: