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 Use Case in Odoo
Suppose you want to get a list of partner names with a suffix based on whether they have an email:
partners = self.env[‘res.partner’].search([])
names = [
partner.name + (‘ ✅’ if partner.email else ‘ ❌’)
for partner in partners
]
This creates a list of partner names with a check mark if they have an email, or a cross if they do not.
✅ Summary Table
Element |
Description |
| for x in y | Standard loop |
| if condition else | Adds conditional logic per item |
| Usage | Clean, efficient conditional collections |
