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Python Python Basics (2015) Shopping List App Second Shopping List App

HARMANDEEP PANNU
HARMANDEEP PANNU
2,077 Points
Posted by HARMANDEEP PANNU
HARMANDEEP PANNU
2,077 Points

code not working line 12, in showLetters     for x in grades: TypeError: 'float' object is not iterable

def main():
    scores = input("Enter five test scores: ")
    scores = [int(x) for x in scores.split(",")]
    showLetters(scores)
    calc_average(scores)



def showLetters(grades):
    for x in grades:
        scores = [int(x)]
        if x >= 90 and x <= 100:
            grades = "A"
        elif x >= 80 and x <= 89:
            grades = "B"
        elif x >= 70 and x <= 79:
            grades = "C"
        elif x >= 60 and x <= 69:
            grades = "D"
        elif x < 60:
            grades = "F"
        print("{:.1f} is {}".format(x, grades))

def calc_average(grades):
    total = 0
    for el in grades:
        scores = [int(el)]
        total += el
        average = total / 5
        letter = showLetters(average)
        print("The average is: {:.1f} which is {}".format(average, letter))


main()
Tatiana Perry
Tatiana Perry
17,156 Points
Tatiana Perry
Tatiana Perry
17,156 Points

Can you paste this as a code block. Use the markdown cheat sheet if you need help

HARMANDEEP PANNU
HARMANDEEP PANNU
2,077 Points
HARMANDEEP PANNU
HARMANDEEP PANNU
2,077 Points 
line 12, in showLetters
    for x in grades:
TypeError: 'float' object is not iterable

This is the error I'm getting.

1 Answer

Steven Parker
Steven Parker
229,744 Points
Steven Parker
Steven Parker
229,744 Points

The wrong argument type is being passed to showLetters().

The function showLetters() takes an iterable argument (such as a list) and prints messages but does not return any value.

But in calc_average() it is being called on this line:

        letter = showLetters(average)

The variable average contains a float value at this point, which causes the error. But also notice that letter is being assigned here and will always be None, since showLetters() does not return anything.