How to make Python to check is variable a number or letter?
I'm a Python beginner, and I need help figuring out how to check whether user input is a number or not. In my code, I want to allow the user to input their age, and if they input a valid number, the program should continue. However, if they input something that isn't a number, I want the program to notify them and ask them to try again. Here's a part of my code:
str.isdigit()
Reading is important. If you know how to read then the whole world opens up to you. Việc đọc sách rất quan trọng. Biết đọc, là bạn biết mở ra cách của bước vào một thế giới rộng lớn.
