Switch statements express conditionals across many branches.

```python
import time

def main():
    # Here’s a basic switch.
    i = 2
    print(f"Write {i} as ", end='')
    match i:
        case 1:
            print("one")
        case 2:
            print("two")
        case 3:
            print("three")
    
    # You can use commas to separate multiple expressions in the same case statement.
    # We use the optional default case in this example as well.
    match time.strftime("%A"):
        case "Saturday" | "Sunday":
            print("It's the weekend")
        case _:
            print("It's a weekday")

    # switch without an expression is an alternate way to express if/else logic.
    # Here we also show how the case expressions can be non-constants.
    t = time.localtime()
    match t.tm_hour:
        case _ if t.tm_hour < 12:
            print("It's before noon")
        case _:
            print("It's after noon")

    # A type switch compares types instead of values. You can use this to discover the type of a dynamic variable.
    # In this example, the variable item_type will have the type corresponding to its clause.
    def what_am_i(item):
        match item:
            case bool():
                print("I'm a bool")
            case int():
                print("I'm an int")
            case _:
                print(f"Don't know type {type(item)}")

    what_am_i(True)
    what_am_i(1)
    what_am_i("hey")

if __name__ == "__main__":
    main()