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Python Python Collections (Retired) Slices sillyCase

Andy Davis
Andy Davis
19,682 Points
Posted by Andy Davis
Andy Davis
19,682 Points

Problem Uppercasing String

I don't know why using .upper() isn't uppercasing the string here. Any advice is much appreciated.

silly.py 
# 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(str):
  length = len(str)
  return str[:length].lower() + str[:-length].upper()

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,423 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points

I see three errors:

  • The string dividing point should be in the middle. You are using the full length. Remember to divide by 2 and use round() in case the length is odd
  • Both halves of your return are counting from the beginning of the string. A string can be divided using: string[:mid] + string[mid:]
  • Do not use the names of built-in functions for variable names. Replace str with string, or other name.
Andy Davis
Andy Davis
19,682 Points
Andy Davis
Andy Davis
19,682 Points

Thanks so much Chris! Fwiw, here's how I ended up solving it:

def sillycase(string):
  length = round(len(string)/2)
  return string[:length].lower() + string[length:].upper()