A list is a data structure that allows you to store more than a single variable in one variable. Do you want to remove square brackets from a list? If yes then this post is for you. There are several methods you can use to remove square brackets from a list in Python. We will explore each of them.
Methods to remove square brackets from a list in Python
Method 1: Using str() and slice notation
The first method to remove square brackets from a list is to first convert the list into a string with the str() function. After that then slice the string to take out the brackets.
Run the below lines of code to remove square brackets.
sample_list = [10, 20, 30, 40, 50]
sample_string = str(sample_list )[1:-1]
print(sample_string )Output
10, 20, 30, 40, 50
Here I have first created a list called “sample_list" that contain elements of numeric type. The str() function is then applied to the list to convert the list into a string. Lastly, the square brackets at the beginning and end of the string are removed by using slice notation.
Method 2: Remove square brackets from list in python Using join() and map()
The join() and map() functions can also be used in combination to convert the elements of a list into a string. By implementing both functions you are able to eliminate or remove the square brackets.
Use the below line of code to remove it.
sample_list = [10, 20, 30, 40, 50]
sample_string = ', '.join(map(str, sample_list))
print(sample_string)Output
10, 20, 30, 40, 50
Here you can see I am first defining a sample list ‘sample_list’. After that using the map() function to convert each element to a string. Lastly, you will use the join() method to join the elements with commas and spaces.
Method 3: Using list comprehension
Another method to remove square brackets from a list in Python is the use of list comprehension. You can easily create a new list without square brackets by excluding them from the original list.
Execute the below lines of code to remove the brackets.
sample_list= [1, 2, 3, 4, 5]
sample_list_no_brackets = [str(e) for e in sample_list]
sample_string= ', '.join(sample_list_no_brackets)
print(sample_string)Output
10, 20, 30, 40, 50
Here We are first creating a list. After that, we use list comprehension to create a new list, sample_list_no_brackets. Its every element is converted to a string. Finally, we use the join() method to merge the elements of sample_list_no_brackets, separating them with commas and spaces.
Conclusion
There are several approaches one can take to eliminate square brackets from a list in Python. The first method is the use of the str() function combined with slice notation can slice the first and last characters of a string. The other method is the use of the join() method and map() function in combination to convert the list elements to strings and then join them together. At last, you can use list comprehension that will create a fresh list without any brackets and the join() method can then be used to join its elements.
All of these techniques are easy and efficient ways to take out square brackets from a list in Python, and the selection of which one to use may depend on individual preference or the precise needs of one’s code.
