Single Return Value
A single return value of a function in Python refers to returning a single object or value from a function. This type of return value has been used in previous sections.
12345def add_numbers(a, b): return a + b result = add_numbers(3, 5) print(result) # outputs: 8
The function add_numbers
takes two arguments, adds them, and returns a single value β their sum. In this example, the result is stored in the variable result
and printed to the console.
The join()
function in Python combines elements of an iterable, such as a list, into a single string, using a specified separator.
For example, ", ".join(["a", "b"])
returns "a, b"
.
1234# Example of join() words = ["red", "green", "blue"] combined = ", ".join(words) print(combined)
The strip()
method removes leading and trailing whitespace by default, or any characters you specify, from both the start and end of the string.
For example, " text ".strip()
returns "text"
without spaces, and "a,b,c,".strip(",")
removes commas from the ends, returning "a,b,c"
.
1234# Example of strip() raw_text = ",a,b,c," cleaned_text = raw_text.strip(',') print(cleaned_text)
Swipe to start coding
Imagine that each of your friends has given you their own shopping list. To make shopping easier, you need to combine all the lists into a single list of items β formatted as a single string.
Follow these steps:
- Initialize a variable named
merged_list
as an empty string to store the final combined result. - Loop through each list inside the
shopping_lists
argument. - Inside the loop, merge all items of the current list into a single string using the
join()
method with a comma and space separator', '
. - After each merged list, append a comma and space to separate it from the next one.
- Before returning the result, use the
strip(', ')
method to remove the extra comma and space at the end. - Return the final merged shopping list string.
Solution
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single
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Single Return Value
Swipe to show menu
A single return value of a function in Python refers to returning a single object or value from a function. This type of return value has been used in previous sections.
12345def add_numbers(a, b): return a + b result = add_numbers(3, 5) print(result) # outputs: 8
The function add_numbers
takes two arguments, adds them, and returns a single value β their sum. In this example, the result is stored in the variable result
and printed to the console.
The join()
function in Python combines elements of an iterable, such as a list, into a single string, using a specified separator.
For example, ", ".join(["a", "b"])
returns "a, b"
.
1234# Example of join() words = ["red", "green", "blue"] combined = ", ".join(words) print(combined)
The strip()
method removes leading and trailing whitespace by default, or any characters you specify, from both the start and end of the string.
For example, " text ".strip()
returns "text"
without spaces, and "a,b,c,".strip(",")
removes commas from the ends, returning "a,b,c"
.
1234# Example of strip() raw_text = ",a,b,c," cleaned_text = raw_text.strip(',') print(cleaned_text)
Swipe to start coding
Imagine that each of your friends has given you their own shopping list. To make shopping easier, you need to combine all the lists into a single list of items β formatted as a single string.
Follow these steps:
- Initialize a variable named
merged_list
as an empty string to store the final combined result. - Loop through each list inside the
shopping_lists
argument. - Inside the loop, merge all items of the current list into a single string using the
join()
method with a comma and space separator', '
. - After each merged list, append a comma and space to separate it from the next one.
- Before returning the result, use the
strip(', ')
method to remove the extra comma and space at the end. - Return the final merged shopping list string.
Solution
Thanks for your feedback!
single