Python dictionary clear() usage and example

Python dictionary methods

The clear() method deletes all items from the dictionary.

The syntax of clear() is:

dict.clear()

clear() parameters

clear() without any parameters

clear() return value

The clear() method does not return any value (returns None).

Example1How does the clear() method work on the dictionary?

d = {1: "one",　2: "two"
d.clear()
print('d =', d)

When running the program, the output is:

d = {}

You can also delete all elements from the dictionary by assigning an empty dictionary {}.

However, if there are other variables referencing the dictionary, then calling clear() and assigning {} have differences.

d = {1: "one",　2: "two"
d1　= d
d.clear()
print('Delete items using clear()')
print('d =', d)
print('d1　=, d1)
d = {1: "one",　2: "two"
d1　= d
d = {}
print('Delete items through allocation {}')
print('d =', d)
print('d1　=, d1)

When running the program, the output is:

Delete items using clear()
d = {}
d1　= {}
Delete items through allocation {}
d = {}
d1　= {1: 'one',　2: 'two'

Python dictionary methods