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Python Python Collections (2016, retired 2019) Tuples Stringcases

competent- fellow
competent- fellow
5,846 Points
Posted by competent- fellow
competent- fellow
5,846 Points

Blocked on Tuples: Stringcases

I am blocked on the tuples: Strincases code challenge. I use the following (perhaps overly complex) code to get all the cases:

def stringcases(string): upper = string.upper() lower = string.lower() titlecased = string.capitalize() str_reversed = reverse(string) return (upper, lower, titlecased, str_reversed)

def reverse(string): str_list = list(string) str_reversed = [] for letter in str_list: str_reversed.insert(0, letter) string = ''.join(str_reversed) return stringdef stringcases(string): upper = string.upper() lower = string.lower() titlecased = string.capitalize() str_reversed = reverse(string) return (upper, lower, titlecased, str_reversed)

"tomatoes" returns ('TOMATOES', 'tomatoes', 'Tomatoes', 'seotamot'), which I think is correct. But I get a "Bummer: Got the strong string for" [blank] message.

Maybe a bug?

Thanks in advance for your help!

stringcases.py 
def stringcases(string):
    upper = string.upper()
    lower = string.lower()
    titlecased = string.capitalize()
    str_reversed = reverse(string)
    return (upper, lower, titlecased, str_reversed)

def reverse(string):
    str_list = list(string)
    str_reversed = []
    for letter in str_list:
        str_reversed.insert(0, letter)
    string = ''.join(str_reversed)
    return string

1 Answer

anthony pizarro
anthony pizarro
1,983 Points 
def stringcases(string):
    first = string.upper()
    second = string.lower()
    third = string.title()
    forth = string[::-1]
    return first, second, third, forth

or 

    def stringcases(string):
    return (string.upper(), string.lower(), string.title(), string[::-1])

both are correct but one is better(the first one), because it much more readable(imagine 3000 line of code and 1 error #were you forgot the ","). for the forth string we used slice to reverse . [::]

Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points

Pro tip: If you encase your code blocks in ```python and ``` (leaving a blank line outside the makers before and after, you will get nicely colorized code. The ` is typically found left of the 1 key

def stringcases(string): return (string.upper(), string.lower(), string.title(), string[::-1])

becomes

def stringcases(string):
    return (string.upper(), string.lower(), string.title(), string[::-1])