Question

def compareRisk(compareCountry, countryList, filename):
    filename = open(filename, "r")
    content = filename.readlines()
    returnList = []
    for row in content [1:]:
        line = row.split(",")
        name = line[0]
        population = float(line[1])
        infectedPopulation = float(line[2])

    for compareCountry in content:
        comparePopulation = float (line[1])
        compareInfected = float (line[2])

    for name in countryList:
        if population < comparePopulation:
            if infectedPopulation > compareInfected:
                returnList.append(name)
            else:
                return "No countries"
    return returnList
print(compareRisk("Tuvalu", ["Turkmenistan", "Norway", "Netherlands", "Philippines"], 'covid.csv'))
       

Why is my code returning an empty list?

This is the covid.cvs snippet for reference:

Country	Cases	Infected
Aruba	11883	10105
Afghanistan	36651	29167
Angola	4858	3321
Anguilla	16657	11785
Ã…land Islands	59569	18462
Albania	87629	37130
Andorra	18596	1813
United Arab Emirates	22831	5957
Argentina	14593	11424
Armenia	22058	10286
American Samoa	19845	16246
Antarctica	72622	26437
French Southern Territories	99456	12123
Antigua and Barbuda	53272	24205
Australia	72149	55762
Austria	35311	10826
Azerbaijan	9005	2600
Burundi	20872	20308
Belgium	54222	17084

Answer 1

check out the solution.

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Code:

# function definition
def compareRisk(compareCountry, countryList, filename):
# open file in read mode
filename = open(filename, "r")
# read file contents
content = filename.readlines()
# initialize return list
returnList = []
  
# save the details of compareCountry
for row in content [1:]:
if compareCountry in row:
line = row.split(",")
comparePopulation = float(line[1])
compareInfected = float(line[2])
  
# loop through each country in countryList
for name in countryList:
# loop through file
for row in content [1:]:
# if name present in file then only split that row
if name in row:
line = row.split(",")
population = float(line[1])
infectedPopulation = float(line[2])
  
# after splitting the row
# compare the details with compareCountry details
if population < comparePopulation:
if infectedPopulation > compareInfected:
# if condition met then append to the list
returnList.append(name)
  
# check if list if empty or not
if(returnList):
return returnList # if not empty , print the list
else:
return "No countries" # if empty, print appropriate message

# function call and print the returned list
print(compareRisk("Andorra", ["Afghanistan", "Armenia", "Angola", "Anguilla"], 'covid.csv'))

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OUTPUT :

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COVID.CSV :

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