Why dict get key instead of dict key

Question

Today, I came across the dict method get which, given a key in the dictionary, returns the associated value.

For what purpose is this function useful? If I wanted to find a value associated with a key in a dictionary, I can just do dict[key], and it returns the same thing:

dict = {"Name": "Harry", "Age": 17}
dict["Name"]
dict.get("Name")

Answer 1

As per the documentation the dictionary.get() is a built in method in Python and returns the value for key of it exists, else returns default.
dictionary.get(key, default=None, /)
 

For Example:

value = {"Name": "Harry", "Age": 17}
value["Name"]

Output

'Harry'

value.get("Name")

Output

'Harry'

value["Name"]

Output

'Harry'

When we try to access the key which is not present we get a key error.

value['Address']

Output

---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
<ipython-input-27-94bca0b4dfed> in <module>
----> 1 value['Address']

KeyError: 'Address'

using dictionary.get() 

value.get('Address', 'not mentioned')

Output

'not mentioned'

Hope this helps.