I need help. After looking at others I think I have the right code but I can't pass. Any help you be great:

lloyd = {

"name": "Lloyd",

"homework": [90.0, 97.0, 75.0, 92.0],

"quizzes": [88.0, 40.0, 94.0],

"tests": [75.0, 90.0]

}

alice = {

"name": "Alice",

"homework": [100.0, 92.0, 98.0, 100.0],

"quizzes": [82.0, 83.0, 91.0],

"tests": [89.0, 97.0]

}

tyler = {

"name": "Tyler",

"homework": [0.0, 87.0, 75.0, 22.0],

"quizzes": [0.0, 75.0, 78.0],

"tests": [100.0, 100.0]

}

# Add your function below!

def average(numbers):

total = 0

total = sum(numbers)

total = float(total)

return total/len(numbers)

def get_average(student):

homework = average(student['homework'])

quizzes = average(student['quizzes'])

tests = average(student['tests'])

return (0.1*homework)+(0.3*quizzes)+(0.6*tests)

def get_letter_grade(score):

score = float(score)

if (score >=90):

return "A"

elif (score is >=80):

return "B"

elif score is >=70:

return "C"

elif (score is >=60):

return "D"

else: return "F"

print get_letter_grade(get_average(llyod))

**The error I get is the following:**

File "python", line 37

elif (score is >=80):

^

SyntaxError: invalid syntax