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Luke Weber
3,897 PointsError Message: slice indices must be integers or None or have an __index__ method
# The first half of the string, rounded with round(), should be lowercased.
# The second half should be uppercased.
# E.g. "Treehouse" should come back as "treehOUSE"
def sillycase(string):
firsthalf = string[:(len(string)/2)].lower()
secondhalf = string[(len(string)/2):].upper()
whole = firsthalf + secondhalf
return whole
I tested this function in my terminal and it ran fine, but the challenge task gives me an error that says my slice indices are not integers? Can someone give me feedback on why I am receiving this error?
2 Answers
Kenneth Love
Treehouse Guest TeacherYou don't seem to be using round() like the hint suggests. So a word like "hello", that has 5 characters, would be trying to go from, say 0 to 2.5, which isn't an integer.
Luke Weber
3,897 PointsHi Kenneth! Thanks for your response.
I'm confused how you are supposed to use the round() function within a string slice. I thought string indices were always integers (and can't be floats), so it would round by default?
Kenneth Love
Treehouse Guest TeacherNope. Python does its best to never do things for you (i.e. doing things implicitly) so if you do "Hello[2.5]", Python will throw an exception because you gave it a non-integer index. That's why you have to use the round() to make sure it's an integer. Ultimately, you're responsible for making sure you have the correct data types.
Luke Weber
3,897 PointsOh okay, got it! Thanks.