I don’t know why but my code won’t even run, it won’t let me run the code because it shows up as an error but on the terminal nothing shows up.
test_settings = {
"brightness": 80,
"volume": 57,
"screen_mode": "dark",
"theme": "dark"
}
def add_setting(settings, new_setting):
key, val = key_value
key = key.lower()
val = value.lower()
if key in settings.keys():
return f"Setting '{key}' already exists! Cannot add a new setting with this name."
else:
return f"Setting '{key}' added with value '{val}' successfully!"
def update_setting(settings, new_setting):
key, val = key_value
key = key.lower()
val = value.lower()
if key in settings.keys():
return f"Setting '{key}' updated to '{val}' successfully!"
else:
return f"Setting '{key}' does not exist! Cannot updae a non-existing setting."
def delete_setting(settings, item):
key = key.lower()
if key in settings.key():
return f"Setting '{key}' deleted successfully!"
else:
return 'Setting not found!'
def view_settings(settings):
if settings == '':
return 'No settings available.'
else:
return f"Current User Settings: '{settings}'"
User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36
Build a User Configuration Manager - Build a User Configuration Manager
dhess
March 30, 2026, 4:10pm
2
Hi @selina_chen ,
Where is key_value defined in your code?
You need to call your function to test it: print(add_setting(test_settings, ('WI-FI','On'))
Happy coding!
It says add_setting isn’t defined, I don’t understand how it works now
dhess
March 30, 2026, 4:16pm
4
Blooper on my part with the print code. I’ve edited it. Please try again.
I don’t know how to proceed, I’ve removed the key_value but there’s an error showing up: UnboundLocalError: cannot access local variable ‘key’ where it is not associated with a value
dhess
March 30, 2026, 6:17pm
6
Please post your updated code.
test_settings = {
"brightness": 80,
"volume": 57,
"screen_mode": "dark",
"theme": "dark"
}
def add_setting(settings, new_setting):
key = key.lower()
val = value.lower()
if key in settings.keys():
return f"Setting '{key}' already exists! Cannot add a new setting with this name."
else:
return f"Setting '{key}' added with value '{val}' successfully!"
def update_setting(settings, new_setting):
key = key.lower()
val = value.lower()
if key in settings.keys():
return f"Setting '{key}' updated to '{val}' successfully!"
else:
return f"Setting '{key}' does not exist! Cannot updae a non-existing setting."
def delete_setting(settings, item):
key = key.lower()
if key in settings.key():
return f"Setting '{key}' deleted successfully!"
else:
return 'Setting not found!'
def view_settings(settings):
if settings == '':
return 'No settings available.'
else:
return f"Current User Settings: '{settings}'"
print(add_setting(test_settings, ('WI-FI','On')))
dhess
March 30, 2026, 6:31pm
8
Again, where is key and value defined in your code?
how exactly do i define it? as in with what values and do i make it a global scope?
dhess
March 30, 2026, 6:45pm
10
You use the values that are passed to the function in your function call. You should not be using any global-scoped variable directly in your function. Use the function parameters.
I replaced the key and val with my parameters settings and new_settings however it shows this error: AttributeError: ‘dict’ object has no attribute ‘lower’
dhess
March 30, 2026, 6:55pm
12
Post your updated code for that bit.
test_settings = {
if setting in settings.keys():
return f"Setting '{setting}' already exists! Cannot add a new setting with this name."
else:
return f"Setting '{setting}' added with value '{new_setting}' successfully!"
def update_setting(settings, new_setting):
if setting in settings.keys():
return f"Setting '{setting}' updated to '{new_setting}' successfully!"
else:
return f"Setting '{setting}' does not exist! Cannot updae a non-existing setting."
def delete_setting(settings, item):
def view_settings(settings):
print(add_setting(test_settings, (‘WI-FI’,‘On’)))
dhess
March 30, 2026, 7:00pm
14
When you enter a code block into a forum post, please precede it with three backticks to make it easier to read.
You can also use the “preformatted text” tool in the editor (</>) to add the backticks.
See this post to find the backtick on your keyboard.Note: Backticks (`) are not single quotes (').
test_settings = {
"brightness": 80,
"volume": 57,
"screen_mode": "dark",
"theme": "dark"
}
def add_setting(settings, new_setting):
settings = settings.lower()
new_setting = new_setting.lower()
if setting in settings.keys():
return f"Setting '{setting}' already exists! Cannot add a new setting with this name."
else:
return f"Setting '{setting}' added with value '{new_setting}' successfully!"
def update_setting(settings, new_setting):
settings = settings.lower()
new_setting = new_setting.lower()
if setting in settings.keys():
return f"Setting '{setting}' updated to '{new_setting}' successfully!"
else:
return f"Setting '{setting}' does not exist! Cannot updae a non-existing setting."
def delete_setting(settings, item):
settings = settings.lower()
if setting in settings.key():
return f"Setting '{setting}' deleted successfully!"
else:
return 'Setting not found!'
def view_settings(settings):
if settings == '':
return 'No settings available.'
else:
return f"Current User Settings: '{settings}'"
print(add_setting(test_settings, ('WI-FI','On')))
dhess
March 30, 2026, 9:01pm
16
Please review this theory lecture thoroughly:Working with Dictionaries and Sets - What Are Dictionaries, and How Do They Work? | Learn | freeCodeCamp.org
Then look at the arguments you are passing to the function parameters in your function call.
The parameter settings will have the value of test_settings, which is a dictionary.new_setting will have the value of your second argument, the tuple ('WI-FI','On').
Can you say what is the key and what is the value that you are trying to add to your dictionary?
