[HELP] Codecademy says correct IDE says error!


#1

Hello !!
The following is working well with this site but i pasted the entire code in PyCharm (IDE) and it showed error as:
What am i doing wrong here ??
'''''
B
83.86666666666666
Traceback (most recent call last):
line 55, in
print (get_letter_grade(students))
line 33, in get_letter_grade
if score >= 90.0:
TypeError: unorderable types: list() >= float()

''''''

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]
}

def average(numbers):
total = float(sum(numbers)) / len(numbers)
return total

def get_average(student):
for i in student:
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
score = (0.1 * homework + 0.3 * quizzes + 0.6 * tests) #weighted average
return (score)

def get_letter_grade(score):
if score >= 90.0:
return "A"
elif score >= 80.0:
return "B"
elif score >= 70.0:
return "C"
elif score >= 60.0:
return "D"
else:
return "F"

print(get_letter_grade(get_average(lloyd)))

students = [lloyd, alice, tyler]

def get_class_average(students):
results = []
for student in students:
results.append(get_average(student))
return average(results)

print (get_class_average(students))
print (get_letter_grade(students))


#2

Codecademy, as far as I know, is running on Python 2.x. Is the abovementioned PyCharm running the same version, or newer (3)?


#3

PyCharm is on (Python-3), got the gist, still there must be a way to rectify the error...


#4

Well, here you go — Python 3 is a bit different. I'm not sure about what exactly causes the error, but from the message you're getting, I'd just research float usage with lists (basically this 0.1 or 0.3 thing).


#5

0.1 and 0.3 are the percentages provided by the exercise (10% and 30%) to calculate the weighted average....
The error is in this statement:
""" if score >= 90.0: """"
Python 3 is saying that score is a list and 90.0 is a float, which is "unorderable" >> TypeError: unorderable types: list() >= float()

it made the score a list of floats, now it cant compare a list of float with a float value.
check this - http://stackoverflow.com/questions/1614236/in-python-how-to-i-convert-all-items-in-a-list-to-floats


#6

This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.