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Python Python Collections (Retired) Tuples Stringcases

Posted by MUZ140515 Herbert Chirwa
MUZ140515 Herbert Chirwa
2,589 Points

code asking where's string cases

l tried to return my_string.reverse but it recorded bummer where,s string_cases so l had to check previous presentations and came up with the highlighted code but still wont pass

stringcases.py 
# Handy functions:
# .upper() - uppercases a string
# .lower() - lowercases a string
# .title() - titlecases a string
# There is no function to reverse a string.
# Maybe you can do it with a slice?
def string_cases(my_string):
  uppercase = tuple(list(my_string.upper()))
  lowercase = tuple(list(my_string.lower()))
  titlecase = tuple(list(my_string.title()))
  revesrse = tuple(list(my_list.reverse()))
  return (my_string.upper, my_string.lower, my_string.title, my_string[::-1])

1 Answer

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

The first issue might be the function name. I think it is asking for stringcases (without the underscore).

Next to reverse a string you can use the slice notation. [:] would mean to copy the whole string, [::1] would mean to copy the whole string stepping one character at a time. [::-1] would mean to copy the whole string one character at a time starting from the end.

I the code you've pasted, the extra tuple and list functions aren't needed:

def stringcases(my_string):
  uppercase = my_string.upper()
  lowercase = my_string.lower()
  titlecase = my_string.title()
  reverse = my_string[::-1]
  return uppercase, lowercase, titlecase, reverse
MUZ140515 Herbert Chirwa
MUZ140515 Herbert Chirwa
2,589 Points

man you rock. i hadn't figure that had failed to figure out that you dont have to repeat the tuple when returning the string