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pop(key[, default])

#!/usr/bin/python3

site = {'name': 'tutorialpro.org', 'alexa': 10000, 'url': 'www.tutorialpro.org'}

element = site.pop('name')

print('Deleted element:', element)
print('Dictionary:', site)

Deleted element: tutorialpro.org
Dictionary: {'alexa': 10000, 'url': 'www.tutorialpro.org'}

#!/usr/bin/python3

site = {'name': 'tutorialpro.org', 'alexa': 10000, 'url': 'www.tutorialpro.org'}

element = site.pop('nickname')

print('Deleted element:', element)
print('Dictionary:', site)

File "/Users/tutorialpro/tutorialpro-test/test.py", line 5, in <module>
    element = site.pop('nickname')
KeyError: 'nickname'

#!/usr/bin/python3

site = {'name': 'tutorialpro.org', 'alexa': 10000, 'url': 'www.tutorialpro.org'}

element = site.pop('nickname', 'Non-existent key')

print('Deleted element:', element)
print('Dictionary:', site)

Deleted element: Non-existent key
Dictionary: {'name': 'tutorialpro.org', 'alexa': 10000, 'url': 'www.tutorialpro.org'}