python for hacking tutorial part4 get to know dictionary in python
python for hacking tutorial part4 get to know dictionary in python
The Python dictionary data structure provides a hash table that can store
any number of Python objects. The dictionary consists of pairs of items that
contain a key and value. Let’s continue with our example of a vulnerability
scanner to illustrate a Python dictionary. When scanning specific TCP ports, it
may prove useful to have a dictionary that contains the common service names
for each port. Creating a dictionary, we can lookup a key like ftp and return the
associated value 21 for that port.
When constructing a dictionary, each key is separated from its value by a colon,
and we separate items by commas. Notice that the method .keys() will return
a list of all keys in the dictionary and that the method .items() will return an
entire list of items in the dictionary. Next, we verify that the dictionary contains
a specific key (ftp). Referencing this key returns the value 21.
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