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Python Python Collections (Retired) Slices sillyCase

Why can't I lower this variable?

For some reason, I cannot lowercase the variable "upper", I don't have problems lowecasing the variable string though, why is this happening?

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(string):

  this = (list(string))
  print(this)
  print("".join(this))

  upper = (this[:len(this)//2])
  print(upper.lower())

  print(string.lower())
  print(string.upper())


sillycase("SimpleWord?")

1 Answer

Your upper is not a string, it is a list. You should use join on upper to make it a string.