KEEP CALM & Use THIS In Python #code #programming #python

KEEP CALM & Use THIS In Python #code #programming #python

[darrenlefcoe]

Quite nice, but the inbuilt 'get' method achieves this already...

[dipeshsamrawat]

It is good for our own similar classes but for `dict`, there is built-in handle for such operation:

a_dict = {"p": 1, "q": 2, "r": 3}
key = "s"
value = a_dict.get(key, f"Key: {key} does not exist.")
print(value)

The `get` method accepts optional `value` parameter to use when key does not exist.

[danielglauche]

Well thats exactly whats defaultdict is used for

[seanshimon]

You can use also that, without override the dict:
my_dict("not_exist", 0)

or

my_dict("not_exist", "Key is not exist")

[jimraynor]

Interesting, but doing this will get you fired

[Dragokrieger]

What is the "self" stand for?

[Lanxxe]

I swear there is a dunder method for every possible case in existence

[Asto]

What's the point of replacing the KeyError exception with your own again?
It's also not good to return a str if a key is missing. If you have any other type in the dict and try to access an object of that type which is missing, you will just run into another even more confusing exception at runtime instead of the very concise "KeyError".

It's a good way to make your life miserable later on by applying these "tricks".

[pittfa]

Another video about a piece of functionality that while it may be “cool”, no one uses it