The clear() method of Python dictionary

Method Name:

clear

Method Signature:

clear()

Return Value:

None

Overview:

The clear() method of the dict class removes all the elements from a Python dictionary object.
As all the elements of a dictionary are removed through the clear() method the length of the dictionary becomes zero.
While the dictionary methods del(), pop() and popitem() remove one single key-value pair from a dictionary the clear() method removes all the elements of a dictionary and makes the dictionary empty.

Example:

# Example Python program that removes
# all the elements from a Python dictionary
expiredOrders = {1:"Expired",
               10:"Expired",
               14:"Expired",
               15:"Expired"}
expiredOrders.clear()
print("Length of dictionary after removing all items:")
print(len(expiredOrders))

Output:

Length of dictionary after removing all items:
0