Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Python Collections (Retired) Tuples Stringcases

reza sajadian
reza sajadian
718 Points
Posted by reza sajadian
reza sajadian
718 Points

function to lower upper reverse and titlecase the string into a tuple

Hi. I cant figure out what part of my code is going wrong. Here it comes:

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?

string = "python quizes are fine" string_list = [] def split(string): string_list = string.split() return string_list

def uppercased(string_list): uppered = string_list.upper() return uppered

def lowercased(string_list): lower = string_list.lower() return lower

def titlecased(string_list): titlecased = string_list.title() return titlecased

def reverse(string_list): reverse = string_list[::-1] return reverse

def stringcases(string):

a = uppercased(string_list) b = lowercased(string_list) c = titlecased(string_list) d = reverse(string_list) target = tuple(a, b, c, d) return target

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?
string = "python quizes are fine"
string_list = []
def split(string):
  string_list = string.split()
  return string_list

def uppercased(string_list):
  uppered = string_list.upper()
  return uppered

def lowercased(string_list):
  lower = string_list.lower()
  return lower

def titlecased(string_list):
  titlecased = string_list.title()
  return titlecased

def reverse(string_list):
  reverse = string_list[::-1]
  return reverse

def stringcases(string):

  a = uppercased(string_list)
  b = lowercased(string_list)
  c = titlecased(string_list)
  d = reverse(string_list)
  target = tuple(a, b, c, d)
  return target

2 Answers

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,457 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,457 Points

There are two errors in stringcases(). The statements should use the passed parameter string instead of string_list. Also, tuple() takes 1 argument, but 4 are given. You can create the tuple without the function:

def stringcases(string):
  a = uppercased(string)
  b = lowercased(string)
  c = titlecased(string)
  d = reverse(string)
  target = (a, b, c, d)
  return target
Mike Tribe
Mike Tribe
3,827 Points
Mike Tribe
Mike Tribe
3,827 Points 
def  Stringcases(astring):
    return astring.upper(), astring.lower(), astring.title(), astring[::-1]