Conditional expression
Definition
A conditional expression evaluates to one of two values based on a given condition. In Python, it is often written using the syntax 'a if condition else b' where 'a' and 'b' are potential outcomes.
5 Must Know Facts For Your Next Test
- Conditional expressions provide a concise way to return one of two values based on a boolean condition.
- The syntax for a conditional expression in Python is 'value_if_true if condition else value_if_false'.
- Conditional expressions can be nested, but excessive nesting can reduce code readability.
- They are also known as ternary operators because they take three operands: a condition, a result for true, and a result for false.
- Conditional expressions can be used within lambda functions to create short, inline decision-making logic.
Review Questions
- What is the syntax for writing a conditional expression in Python?
- How many operands does a ternary operator take?
- Can conditional expressions be nested within other conditional expressions?
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Related terms
Boolean Expression: An expression that evaluates to either True or False.
If Statement: A control flow statement that executes code blocks based on whether a condition is True or False.
Lambda Function: An anonymous function defined using the lambda keyword, often used for short snippets of code or quick calculations.
