By using the del keyword, you can delete the entire dictionary or the dictionary's items. If you want to delete the dictionary's items, use the following syntax:

del dict[key]

Considering the following code snippet for example:

>>> port = {80: "HTTP", 23 : "Telnet", 443 : "HTTPS"}
>>> del port[23]
>>> port
{80: 'HTTP', 443: 'HTTPS'}
>>>

If you want to delete the entire dictionary, then use the following syntax:

The del dict 

Consider the following example:

>>> port = {80: "HTTP", 23 : "Telnet", 443 : "HTTPS"}
>>> del port
>>> port

Traceback (most recent call last):
 File "<pyshell#12>", line 1, in <module>
 port
NameError: name 'port' is not defined
>>>

The preceding error shows that the port dictionary has been deleted.