In Python, you can get numeric data from user input by using the
input() function in combination with error handling. Below are the main steps:
- Prompt the user for input using the
- Because the value returned by the
input()function is a string, we have to convert it to a numeric value by using appropriate conversion functions like
- Handle any conversion errors with a
try-exceptblock. Display an error message and asking the user to re-enter a number if the current data is inappropriate.
- Use a
whileloop to repeat the process above until a valid numeric input is provided.
while True: try: value = float(input("Enter a number: ")) break except ValueError: print("Invalid input. Please enter a valid number.") print("The entered number is:", value)
Run the program, enter
abc, then enter
123 and you will get the following output:
Enter a number: abc Invalid input. Please enter a valid number. Enter a number: 123 The entered number is: 123.0
That’s it. If you have any questions related to Python programming, feel free to leave a comment. Happy coding & have a nice day!