Function 接受可选参数

Question

From the below code after submitting it as a coding test challenge. I used to get the following feedback from a robot or a bot that is marking the challenge that task() missing 1 required positional argument: 'name' but if I do run it on vs code it will print Hello Friend. And I don't know why. Please Clarify.

def task(name):
    
    print("Hello", name + "!") 
task("Friend")

Answer 1

Maybe they test task() without an argument for name . Try to set a default value like this

def task(name=""):
    print("Hello", name + "!") 
task("Friend")  # Hello Friend!
task()  # Hello !