Do you know #Python "Data Classes"

They are a great Python feature that can help you write less code

🧡Let's find out moreπŸ‘‡
1️⃣ dataclass decorator adds generated methods
- __init__
- __repr__
- __eq__

to the class and returns the same class it was given. This module provides a deco...
2️⃣ Generated __init__ method takes all fields as function parameters. Their values are set to instance attributes with the same names.

Fields are defined as type annotated class attributes.

For example, you can define User with fields id and name.πŸ‘‡ A dataclass is a Python mod...
3️⃣ Generated __repr__ method returns a string containing:

- class name
- field names
- field representation

The order of fields is the same as the order of their definition in a class. πŸ‘‡ A Python class is a program...
4️⃣ Generated __eq__ method compares the class tuples containing field values of the current and the other instance.

It supports only instances of the same class

True is returned if:
- current and other are of the same class
- fields of both have the same values
πŸ‘‡ Python has the following da...
5️⃣ You can enable the ordering of instances by setting the order argument of the decorator to True.

It adds methods:
- __lt__
- __le__
- __gt__
- __ge__

They are implemented in the same way as __eq__
πŸ‘‡ A data class refers to a cl...
6️⃣ You can make instances immutable by setting the argument frozen to True

In such case dataclasses.FrozenInstanceError is raised if you try to reassign instance attribute The dataclass decorator is ...
7⃣ You can read more here.…

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More from @AkshaykKaushik

Feb 7
#Python 🐍 3.10: has a "Switch" like statement.

But it's not a switch, it's called "Pattern Matching."

Pattern matching is way beyond the "Switch Statement"
πŸ‘‡ python Pattern matching is ...
The pattern matching takes a value following match and allows us to write out several potential cases, each defined by case. Where we find a match between the match-case we will execute the respective code. #programming πŸ‘‡
Even though it is not a "switch", it can be used as.πŸ‘‡
Read 4 tweets

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