The clear() function in Python is used to empty the list, dictionary, or set. That is, the clear() function removes all items from the list, dictionary, or set. For example:

mylist = [9, 8, 10, 12]
print("The list is:")
print(mylist)

mylist.clear()
print("\nNow the list is:")
print(mylist)

The output produced by above Python code, demonstrating the clear() function, is:

The list is:
[9, 8, 10, 12]

Now the list is:
[]

The list exists, but becomes empty. Here is another example of clear() function. In this example, I've used this function to remove all items of the dictionary:

mydictionary = {"Name": "Mathew", "City": "California"}
print("The dictionary is:")
print(mydictionary)

mydictionary.clear()
print("\nNow the dictionary is:")
print(mydictionary)

The output produced by this program will exactly be:

The dictionary is:
{'Name': 'Mathew', 'City': 'California'}

Now the dictionary is:
{}

Same things goes with the set. Here is an example, uses clear() function to empty the set, or to remove all elements of a set:

myset = {1, 2, 3}
print(myset)
myset.clear()
print(myset)

The output produced by this Python program, is given below:

Python clear() Function Syntax

Syntax to use clear() function in Python is:

Python clear() Function Example

Here is another example of clear() function in Python, that empty the list if user wants:

mylist = [9, 8, 10, 12]
print("The list is:")
print(mylist)

print("\nDo you want to empty the list (y/n) ? ", end="")
choice = input()
if choice == 'y':
    mylist.clear()
    print("\nNow the list is:")
    print(mylist)
else:
    print("\nOk!")

The snapshot given below shows the sample run of above Python code, with user input y as choice to empty the list named mylist:

Python Online Test

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