# if()

`if(predicate, then_expr, else_expr)` returns `then_expr` if `predicate` is `true`, and `else_expr` otherwise.

## Returns

* If `predicate` is exactly `true` , we return `then_expr` .
* Otherwise, we return `else_expr`.

## Examples

```python
# evaluates to "red" if the color is red, "green" otherwise
if(color_is_red, "red", "green")
```