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Python Functional Python The Lambda Lambada Partial

Posted by Emily Strobl
Emily Strobl
5,429 Points

What am i doing wrong

i keep getting an error

discounts.py 
from functools import partial
prices = [
    10.50,
    9.99,
    0.25,
    1.50,
    8.79,
    101.25,
    8.00
]


def discount(price, amount):
    return price - price * (amount/100)

discount 10 = partial(discount, discount=.1)

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,441 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points

You're on the right path.

  • There is an underscore missing in "discount 10"
  • the second argument to partial should be the discount argument you wish to prefill in. In this case use amount=10

Use 10 instead of .1 since the function discount converts to percentage with "/100"

Post back if you need more help. Good luck!!