How to Implement one line for loop with if and else in Odoo?

Overview

In Python, a one-liner for loop with conditional logic is called a list comprehension (or dictionary/set comprehension). It is used to build new collections (like lists) from an iterable, in a compact and readable form.

✅ Basic Syntax

[<expression_if_true> if <condition> else <expression_if_false> for <item> in <iterable>]

This will evaluate each item and apply either the if_true or else part accordingly.

Example

[ "Even" if x % 2 == 0 else "Odd" for x in range(5) ]

# Output: ['Even', 'Odd', 'Even', 'Odd', 'Even']

🧠 Realistic Odoo Example

Suppose you want to get a list of partner names with a suffix based on whether they have an email:

This creates a list of partner names with a check mark if they have an email, or a cross if they do not.

✅ Summary

Element	Description
for x in y	Standard loop
if condition else	Adds conditional logic per item
Usage	Clean, efficient conditional collections