Converting a javascript Coding to Python Coding for Elfish Program

Question

I was looking for a program to do the elfish instances. Then I found this javascript code on the web.

var containsE;
var containsL; 
var containsF; 

function elfish(str){

    var checkLetter = str[str.length - 1]; 
    if (checkLetter === "e"){
        containsE = true;
    }
    else if (checkLetter === "l"){
        containsL = true; 
    }
    else if (checkLetter === "f"){
        containsF = true; 
    }
    // base case 
    if (str.length === 0)
        if (containsE && containsL && containsF){
            return true; 
        }
        else {
            return false; 
        }
    // if not base case     
    return elfish(str.slice(0, str.length - 1)); 
}

elfish("whiteleaf");

I wonder if it is possible to guide me to convert the code into python with an explanation? the python version is 2.73

Could you explain what the desired output of the code should be? — Simon Crane
– Simon Crane, Commented Oct 2, 2019 at 13:35
Try it yourself. If you have a specific question, you can ask here. — Michael Butscher
– Michael Butscher, Commented Oct 2, 2019 at 13:36
Hi, so for the output, if the user enter the word waffles then it is a elfish — fulniz
– fulniz, Commented Oct 2, 2019 at 14:31

Heini · Accepted Answer · 2019-10-02 13:48:32Z

1

I think there is nothing special to explain here. Python is very self-explaining in your case. To keep it readable i added parenthesis in the if statement. You could just leave them:

while True:
    # type in which word you want
    s = input() 
    # if some letter in your string was found
    if ('e' in s) and ('l' in s) and ('f' in s): 
        print('true')
    else:
        print('false')

answered Oct 2, 2019 at 13:48

Heini

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2 Comments

fulniz Over a year ago

Thank you for the guidance and the explanation!

Heini Over a year ago

If this solved your question i would be glad if you mark it as answered. :)

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