Confused where the original.isalpha(): came from



I'm confused where the original.isalpha(): came from in the instructions :frowning:

Check Yourself, I've done it too many times

.isalpha() is a built-in Python function that checks for alphabetic characters.


Not sure if I missed something but I don't recall the program teaching it before. Kinda threw me off since I had no idea what it did.


Guessing the author saw it as a learning opportunity, given the simplicity of the string method. I expect that if we glean back far enough we will find ample material to create a doc that describes it more fully. For the most part, we are only making sure that the inputs are alphabet characters..