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Python Python Collections (Retired) Tuples Stringcases

Posted by Joeseph Wolfe
Joeseph Wolfe
Courses Plus Student 1,010 Points

I am not understanding what I did wrong, this seems to work in my local interpreter.

The only message I see returned back is "Bummer!, Try again!" which is not helpful in determining what I did wrong :(.

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 stringcases(my_str):
    tup_up = tuple(my_str.upper())
    tup_lower = tuple(my_str.lower())
    tup_title = tuple(my_str.title())
    reverse_str = my_str[::-1]
    tup_rev = tuple(reverse_str)
    return tup_up, tup_lower, tup_title, tup_rev
string = 'this is a test string'
stringcases(string)

1 Answer

Alexander Davison
Alexander Davison
65,469 Points
Alexander Davison
Alexander Davison
65,469 Points

Two problems:

  • Don't translate the strings into tuples! Get rid of every existence of the tuple() function. Only keep the last tuple (the one you return)
  • Don't call the function! The code challenge does that automatically for you :)

With all of those fixed, your code should look like:

def stringcases(my_str):
    uppercase = my_str.upper()
    lowercase = my_str.lower()
    titlecase = my_str.title()
    reverse = my_str[::-1]
    return uppercase, lowercase, titlecase, reverse

Good luck! ~alex

Salvatore Architetto
Salvatore Architetto
1,506 Points

Hey Alexander, just wondering why adding the Tuple function is function is incorrect? In my code I was using enumerate() before word.upper() etc. Will using just .upper() .lower() bring back a tuple regardless? Thanks