Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python The Challenge

Posted by Tyler Wasser
Tyler Wasser
279 Points

Nesting dot notation

Is there a way to make the variable understanding only produce a lowercase answer using the .lower() method while also utilizing the .format() method to input the name in the string? I want it to not continue the loop if I were to type "Yes" in the prompt.

https://w.trhou.se/po5uzu7tmk

2 Answers

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

You're right, you just need to use the "lower" method to make the test work with any case input:

while understanding.lower() != 'yes':
Tyler Wasser
Tyler Wasser
279 Points

Okay awesome! Thank you. Is it possible to do an input("string".format().lower) or something along those lines to do multiple methods on the same string?

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

Sure, you could also code this as:

understanding = input("Hey, {}. Do you understand while loops? ".format(name)).lower()

The potential disadvantage is that you no longer have the verbatim answer for outputting if needed.

justlevy
justlevy
6,325 Points
justlevy
justlevy
6,325 Points

I have a question about making user input lower case all the time...

My code below has 2 .lower() methods.

Is this considered 'clean' or is there a way to do this only once?

Thanks in advance!

name = input("What's your name? ")

answer = "no"

while answer.lower() == "no":
    print("{}, do you understand Python while loops?    ".format(name))
    answer = input("Enter yes/no  ")
    if answer.lower() == "no":
        print("Python while loops are great for repeating blocks of code that appear infinitely. Remember, DRY!")


print("Congratulations, {}, you understand!".format(name))