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William Warren
2,519 Pointspython len method doesn't return an int?
I am trying to divide a string using a slice, however
'''python firsthalf= word[:len(str) / 2] secondhalf = word[len(str) / 2:] '''
throws an error asking for slice indices to be ints
2 Answers
andren
28,558 Pointslen by itself returns and int but division produces floats (numbers with decimals), which is a number type that is separate from int.
So you can end up with numbers like 2.5 which doesn't make sense as a slicing value. One of the easiest ways around this is to use the round method on the division operation, round takes a float and rounds it to an int value.
William Warren
2,519 Pointsthanks!
Jason Anello
Courses Plus Student 94,610 PointsJason Anello
Courses Plus Student 94,610 PointsIf this is for the sillycase challenge then you'll need to convert it to an int.
round()won't give the correct index every single time.The decimal has to be truncated. You can either convert to an int with
int()or do integer division with//Examples:
andren
28,558 Pointsandren
28,558 PointsAh is that so, I didn't realize that. The sillycase challenge in the older retired Python Collections course had a comment that directly specified that
roundshould be used so that is what I based my answer on. Thank you for the correction.Jason Anello
Courses Plus Student 94,610 PointsJason Anello
Courses Plus Student 94,610 PointsYes, the old one did specifically hint at the round() function which meant that the middle letter on odd length strings sometimes went with the upper half and sometimes with the lower half.
On the new one it looks like it should always be with the upper half.