Need Help in making this function stop repeating itself and just import the five

Question

Need Help in making this function stop repeating itself and just import the five students grade in words.txt accurately in Pyhton. Thanks if can help.

grades ="grades.csv"

def problem4(grades):

f= open(grades,'r')

line = f.readline()

reader = Csv.reader(grades)#choose the states file at this point.

   line = line.split(",")

numA = 0

numB = 0

numC = 0

numD = 0

numF = 0

for grade in line:

if grade =="A":

numA = numA

print(str(numA+2) +" students got A")

if grade =="B":

numB = numB

print(str(numB+3) +" students got B")

if grade =="C":

numC = numC

print(str(numC+1) +" student got C")

if grade =="D":

numD = numD

print(str(numD+2) +" students got D")

if grade =="F":

numF = numF

print(str(numF+1) +" student got F")

problem4(grades)

Explanation / Answer

grades ="grades.csv"

def problem4(grades):

f= open(grades,'r')

line = f.readline()

reader = Csv.reader(grades)#choose the states file at this point.

line = line.split(",")

numA = 0

numB = 0

numC = 0

numD = 0

numF = 0

for grade in line:

if grade =="A":

numA = numA +1

if grade =="B":

numB = numB +1

if grade =="C":

numC = numC +1

if grade =="D":

numD = numD +1

if grade =="F":

numF = numF +1

print(str(numA) +" students got A")

print(str(numB) +" students got B")

print(str(numC) +" student got C")

print(str(numD) +" students got D")

print(str(numF) +" student got F")

problem4(grades)

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