Else If Statements

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#1

Hello,

In this exercise, I did my code differently by just checking if the gpa and returning the grade.
But when I saw how system did it, i was confused. Why did it use "grade = “F” for? and can you also explain at then end what is return grade doing?

def grade_converter(gpa):
  grade = "F"
  
  if gpa >= 4.0:
    grade = "A"
  elif gpa >= 3.0:
    grade = "B"
  elif gpa >= 2.0:
    grade = "C"
  elif gpa >= 1.0:
    grade = "D"
    
  return grade

  print(grade_converter(3.7))
#2

You create a default value to fall back on when you do it this way with “F”. That way if none of the conditions are met you just return the variable.

#3

Got it but why did we create variable grade? I am just confused why it was used?

#4

So we print the letter grade according to the score. This is how I did it, which is different.

def grade_converter(grade):
    if grade >= 90:
        return "A"
    elif grade >= 80 and grade <= 89:
        return "B"
    elif grade >= 70 and grade <= 79:
        return "C"
    elif grade >= 65 and grade <= 69:
        return "D"
    else:
        return "F"


# This should print an "A"
print(grade_converter(92))

# This should print a "C"
print(grade_converter(70))

# This should print an "F"
print(grade_converter(61))
#5

So there could be a singular return statement, rather than multiple. Some would have it that way for greater clarity. There are discussions relating to multiple returns from a function if you are willing to dig around the SERPs.

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#6

btw you already know it’s less than or equal to 89/79/69 from previous tests (unless non-integers are used)

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