TypeError: 'in ' requires string as left operand, not list (Function)

Question

variableName=[\"display\",\"screen\",\"sound\"\"audio\"]
fileName=[\"PPP\", \"Abc\"]
P1=\"PPP\"
d=\"display\"
s=\"screen\"
ss=\"sound\"
a=\"audio\"
d=P1
loop=True
def CH         


        

Answer 1

I think you've got the logic of your in statement backwards. You should be checking

if Up.lower() in variableName:

not the other way around.

Answer 2

Using

if (variableName) in Up.lower():

....tests for the existence of a tuple (variableName) in a string Up.lower().

Since variableName is actually a list of strings, depending on what you are trying to achieve, you may well want to use one of the following instead:

if any(s in Up.lower() for s in variableName):

if all(s in Up.lower() for s in variableName):

• The any() option will return True if any of the strings s in variableName are in Up.lower().
• The all option will return True if all of the strings s in variableName are in Up.lower().

Answer 3

If variableName is a list, you can check membership with .__contains__().

Try changing the if statement to if variableName.__contains__(Up.lower):