I want to prompt the user to enter a file name and then to display if it doesn't exist or the information for the file name requested

I'm trying to write a code to promt the user to input a file name (the correct file name is composition_alcohols.xlsx)

I want the user to either have three tries to input the file name before the loop is terminated or when they do enter the file name I want to display the information from the file.

I tried just using

userinput = input('Enter file name: ')

and I am getting an error with this format saying the input is an undefined variable or class but I am also confused how to translate the user input into displaying the desired file.

Answer 1

[madhan ravi]

userinput = input('Enter file name: ' , 's')