python - Checking the type of parameter entered into a function -

so want create function , have perform differently based on type of parameter passed in. want 1 thing if string entered, , else if list entered. possible in python? , if how go doing it?

at moment i've tried using isinstance() doesn't seem hitting of if statements:

def tester(*args):     if (isinstance(args, str)):         return "string"     elif (isinstance(args, list)):         return"list"     else:         return "you dun goofed" 

edit: user ever passing in 1 argument @ time, either list or string.

looks passing single argument function. in case remove '*' since considered tuple of arguments. variable-length arguments , used when aren't sure of number of arguments function need.

def tester(args):     if (isinstance(args, str)):         return "string"     elif (isinstance(args, list)):         return"list"     else:         return "you dun goofed" 

if function requires variable length parameters , want check whether first parameter being passed string or list, can do:

def tester(*args):     if (isinstance(args[0], str)):         return "string"     elif (isinstance(args[0], list)):         return"list"     else:         return "you dun goofed"