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Start your free trialDaniel Kim
Courses Plus Student 526 PointsIs this considered wrong or messy code?
The video had the if statement within the function. Just outta curiosity I tried to use the if statement outside of the function and below the input and it worked. Is this considered wrong or improper formatting?
import math
def split_check(total, number_of_people):
return math.ceil(total / number_of_people)
try:
total = float(input("What is the total? "))
number_of_people = int(input("How man people? "))
if number_of_people <=1:
raise ValueError("More than 1 person is required to split a check")
amount_due = split_check(total, number_of_people)
except ValueError as err:
print("Oh no! That's not a valid value. Try again")
print("{}".format(err))
else:
print("Each person owes ${}".format(amount_due))
1 Answer
Jeff Muday
Treehouse Moderator 28,720 PointsYour code is easy to read with nicely named variables, good job! You also used a well named function name, split_check()
It is very clear what you are intending to do. This will serve you well on your journey to become a software developer.
Your code is clean, but the one "gotcha" is nesting a raise
inside a try except
block. While it is syntactically valid, it can have unpredictable results. In your case, you get it right!
Personally, if I am presented with this kind of task where a user will give unpredictable input I like to embed the input into an event loop. I also like to encapsulate the input to a particular type like the get_number()
function I show below.
Good luck with Python! There are so many programs to write and not enough hours in the day!!
import math
def split_check(total, number_of_people):
return math.ceil(total / number_of_people)
def get_number(prompt):
import sys
while True:
# event loop continues to ask for a number until it succeeds or
# user replies with a "quit" or a "q"
num = input(prompt)
if num.upper().startswith('Q'):
print("exiting program")
sys.exit(0)
try:
value = float(num)
return value
except:
print("Oh no! That's not a valid value. Try again")
while True:
# main event loop
total = get_number("What is the total of the check? (or quit) ")
number_of_people = int(get_number("Number of ways to split? (or quit)"))
if number_of_people <=1:
print("More than 1 person is required to split a check")
else:
amount_due = split_check(total, number_of_people)
print("Each person owes ${}".format(amount_due))
Test it out.
What is the total of the check? (or quit) Yikes shouldn't have ordered dessert!
Oh no! That's not a valid value. Try again
What is the total of the check? (or quit) 88.52
Number of ways to split? (or quit)3
Each person owes $30
What is the total of the check? (or quit) 102.50
Number of ways to split? (or quit)-1
More than 1 person is required to split a check
What is the total of the check? (or quit) 102.50
Number of ways to split? (or quit)5
Each person owes $21
What is the total of the check? (or quit) quit
exiting program