walrus operator (:=) vs traditional assignment: Clean code or unreadable shortcut ???

[hasheramin5-cyber]

🏷️ Discussion Type

Question

Body

Hello Everyone !!!!

I'm curious about how the community feels about thei walrus operator (:=) introduced back in Python 3.8.

While it definitely makes code shorter by allowing assignment inside expressions, I often find it sparks a debate during code reviews. Some team members love it for reducing lines of code, while others feel it degrades overall readability.

For example, comparing these two approaches:

Traditional Approach:

user_input = input("Enter command: ")
while user_input != "quit":
    process(user_input)
    user_input = input("Enter command: ")

Walrus Operator Approach:

while (user_input := input("Enter command: ")) != "quit":
    process(user_input)

What are your thoughts?

1. Do you actively use thei walrus operator in your daily workflows?
2. Are there specific scenarios where you think it shines (like list comprehensions or regex matching)?
3. Does your team's style guide explicitly discourage it for readability's sake?

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[Vendetaaaa]

Hello @hasheramin5-cyber

Honestly, when used properly, it avoids redundant calls or duped lines but if it's "abused" it hides side effects inside complex conds.

Some high-value use caases can be:

1. repeted function calls / io inputs
2. ragex matching in conds statements
3. filtering and/or transforming in list

And about the team, they should be avoid only in:

1. top-lvl statement assignment ( such as writing x :=5 instead of x = 5 is just noise
2. complex nestex experssions
3. Scope leaks