Removing Items
There are several methods to remove items from a dictionary:
Example
The pop() method removes the item with the specified key name:
thisdict = {
“brand”: “Ford”,
“model”: “Mustang”,
“year”: 1964
}
thisdict.pop(“model”)
print(thisdict)
Output:
{‘brand’: ‘Ford’, ‘year’: 1964}
Example
The popitem() method removes the last inserted item (in versions before 3.7, a random item is removed instead):
thisdict = {
“brand”: “Ford”,
“model”: “Mustang”,
“year”: 1964
}
thisdict.popitem()
print(thisdict)
Output:
{‘brand’: ‘Ford’, ‘model’: ‘Mustang’}
Example
The del keyword removes the item with the specified key name:
thisdict = {
“brand”: “Ford”,
“model”: “Mustang”,
“year”: 1964
}
del thisdict[“model”]
print(thisdict)
Output:
{‘brand’: ‘Ford’, ‘year’: 1964}
Example
The del keyword can also delete the dictionary completely:
thisdict = {
“brand”: “Ford”,
“model”: “Mustang”,
“year”: 1964
}
del thisdict
print(thisdict) #this will cause an error because “thisdict” no longer exists.
Output:
Traceback (most recent call last):
File “demo_dictionary_del3.py”, line 7, in <module>
print(thisdict) #this will cause an error because “thisdict” no longer exists.
NameError: name ‘thisdict’ is not defined
Example
The clear() method empties the dictionary:
thisdict = {
“brand”: “Ford”,
“model”: “Mustang”,
“year”: 1964
}
thisdict.clear()
print(thisdict)
Output:
{ }