Handle errors
Lesson 3 of 5 in Coddy's Currency Converter - Python Project course.
It's a good practice to handle errors.
In Python to raise an exception with an error message we use,
raise Exception("My error message")
Challenge
EasyAdd error handling to to_usd function, handle the above errors:
- Currency not supported - raised if the currency is not in
CURRENCIES - Invalid amount - raised if the amount asked is lower than 0
Check the test cases for the error message format of each error!
Try it yourself
CURRENCIES = {
'USD': 1,
'EUR': 1.06,
'YEN': 0.0067,
'GBP': 1.23,
'AUD': 0.64,
'CAD': 0.74
}
def to_usd(currency, amount):
res = CURRENCIES[currency] * amount
return res