Source: 📖 Effective Python item 10

Assignment expressions can be combined with comparison and logical operators as part of logical expressions

The walrus operator can be used within a broader logical expression to make more complex evaluations.

budget = 50
price = 75
discount = 35

if (reduced_price := price - discount) <= budget:
	print("I can afford it!")
else:
	print("It's out of my budget")

Above, reduced_price is assigned the value of price - discount, and then compared to budget. When the walrus operator is used in this manner, the assignment expression should be wrapped in parentheses as it is a sub-expression of a larger expression.

See also:

• Assignment expressions explained