d11.py

d = {'name': 'karthi',
      'age': 7,
      'city': 'chennai',
      }


# If key is in dictionary means, it is removed from the dictionary.
del d['name']
print(d)  # Output: {'age': 7, 'city': 'chennai'}


# If key is not in dictionary means KeyError is thrown.
del d['state']# Output:KeyError: 'state'


# clear - it will empty the dictionary.
d.clear()
# clear() method will return None.It will clear the original dictionary
print(d.clear())  # Output: None.
print(d)  # Output: {}

# del - del keyword is used to delete the dictionary itself.
del d
# d1 is deleted and is not available.
print (d) #Output: NameError: name 'd' is not defined