Respuesta :
Answer:
#a global variable that would store the grades of all students
#it would be a dictionary of lists. One can opt for any other data type
grades={"bob":[3,4,2.5], "alice": [2.3,3.1,2]}
#this is the function that calculates average
def calculateAverage(studentName):
#the for loop is for iteration. we iterate over dictionary items
for student, grade in grades.items():
#we check if student record exists
if student==studentName:
average= sum(grade)/len(grade)
return(average)
else:
print("student does not exist :")
#the calculate Average function ends here
#this is the function that calculates lowest grade
def lowestGrade(studentName):
for student, grade in grades.items():
if student==studentName:
return(min(grade))
else:
print("student does not exist :")
#the lowestgrade function ends here
#this is the function that calculates highest grade
def highestGrade(studentName):
for student, grade in grades.items():
if student==studentName:
return(max(grade))
else:
print("student does not exist :")
#the highest grade function ends here
#main function
def main():
studentname=input("please input student name: ")
print("the average gpa of {}: is {}".format(studentname,calculateAverage(studentname)))
print("the lowest grade of {}: is {}".format(studentname,lowestGrade(studentname)))
print("the heighest gpa of {}: is {}".format(studentname,highestGrade(studentname)))
#main function ends
main()
Explanation:
- we have used python programming to solve this problem
- in order to create a function, the "def" keyword
- in each function, we first check whether student record exists or not
- we iterate over the dictionary, if record is found, we do our calculations and return the value
- if record is not found, we print a message that student does not exist
- the input is taken from user in main function through input function, which a builtin python function
