In Python we have the switch function?

Question

In Python we have the function switch? wanted to create a program but didn’t want to use many if, and that’s why the function switch help, but I’ve seen several videos Python lessons and no talk of switch, by chance does not exist in Python?

Answer 1

No, in general the solution is to use if and elif:

x = 1
if x == 0:
    print("imprime 0")
elif x == 1:
    print("imprime 1")
elif x == 2:
    print("imprime 2")
else:
   print("imprime outra coisa")

Or a dictionary that generates something close, but has no option default then you would have to check before it fits into any or make sure it will always be valid.

x = 1
print({
        1 : "deu um",
        2 : "deu dois",
    }[x])

Or if you want me to do something:

print({
        1 : lambda x: x + 2,
        2 : lambda x: x - 2,
        3 : lambda x: x * 2
}[x](5))

If you want something more complex then you have to create functions and call there.

Behold working in the ideone. And in the repl it.. Also put on the Github for future reference.

if and switch is essentially the same thing. His only real gain is the optimization that some languages do, but it makes little sense in Python. The switch may have a higher syntax cost in some cases. Some languages put extra functionality in switch.

I use a language that switch does not bring advantages. I prefer to use the if even.

switch is not a function is a language command.