Python

Python Clear List

Several ways on the list type of data in Python exist to assist you in erasing an element from a specified list. To erase all of the elements from the Python list, we will be using the clear() method. This approach makes the list blank rather than deleting it. To remove all entries from the list, simply use a clear method that we will further clarify in this guide. Python clearly does not produce a result. Instead, it modifies the original list. It removes everything from the list and provides nothing. It does not acquire any parameters. The clear() method removes items from the specified list. Also, it does not throw an exception if the list is empty. The following are some of the processes used to complete this task. We have created a “temp.py” file in our Spyder tool to work on all illustrations of this article.

Example 1: Clear Method

This example will describe the clear method. From the appended code, you can check that we have a list in which we have added few integer values along with some strings. The print statement in the second line will print the defined list before using the clear method. Then, we have called the clear method, and the last print statement will show the list after the clear method. The code is displayed in the next few lines:

List = [1, 0, 6, 1, 'kalsoom']
print('List before :', List)
List.clear()
print('List after :', List)

Once you comprehend the whole code, execute and compile the “temp.py” file. The output will exhibit the list before and after the clear method call:

Example 2

This example is somehow more complex than the preceding one. From the appended lines of code, you can find that we have two lists in which we have added a few integer values along with some strings. The lists are “L1” and “L2”. The print statement will display the defined L1 before the usage of the clear method. Then, we have implemented the clear method for L1, and after that, the print statement will show the list (L1) after the clear method. Again, we are using the print statement that will illustrate the defined L2 before using the clear method. Then we have called the clear method for L2, and after that, the print statement will show the list (L2) after the clear method. The code is exhibited in the next few lines:

  • L1 = [1, 0, 6, 1, ‘kalsoom’]
  • L2 = [‘a’, ‘b’, 7]
  • print (“first list before : ” + str(L1))
  • L1.clear()
  • print (“First list after ) : ”
  • + str(L1))
  • print (“Second list before : “
  • + str(L2))
  • L2 = []
  • print (“Second List after : ” + str(L2))

Once you understand the entire code, execute and compile the “temp.py” file. The output reveals both lists before and after the clear method call:

Example 3

This example will depict the usage of the remove method in the list. This method is somehow quite similar to the clear method. As we have earlier specified, that the clear method will clear the contents on the list. In contrast, the remove method will simply remove one or more elements from the list. From the appended code, you can check that we have a list in which we have added few integer values along with some strings. Then, we have called the remove method for the provided list. In its parameters, we have specified that we want to remove ‘kalsoom’ from the list L1. The last print statement will show the list after removing the method. The code is displayed in the following few lines:

  • L1 = [1, 0, 6, 1, ‘kalsoom’]
  • L1.remove(1)
  • print(L1)
  • L1.remove(‘kalsoom’)
  • print(L1)

Once you understand the complete code, execute and compile the “temp.py” file. The output exhibiting the ‘kalsoom’ has been removed from the list effectively:

Conclusion

The Python clear list method has been explained in this article briefly. This article compromises the basic introduction of the clear method and a few relevant examples to effectively understand it. As a bonus point, we have listed one of the examples of the remove method so that you can easily identify the fundamental difference between the clear and remove methods.

About the author

Kalsoom Bibi

Hello, I am a freelance writer and usually write for Linux and other technology related content