Hi everyone,

Just a question about the code below and other codes that we have used during the course.

I would like to understand how in the code highlighted in bold letters,i.e.(homework = average (student[“homework”])) Python knows that students refers to the three students (lloyd, alice and tyler) because I did not state this in none line of code.

Please, could anyone explain this to me.

Best regards,

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 = sum(numbers)

total = float(total) / len(numbers)

return total

**def get_average(student):**

** homework = average (student[“homework”])**

** quizzes = average(student[“quizzes”])**

** tests = average(student[“tests”])**

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