I have looked around on the StackOverflow forums, unable to find a solution that applies to my specific problem.
I need to write a bit of code, that is continuously checking for user input.
I have got a Raspberry Pi with a Barcode Scanner attached to it. I want my Python script to loop, waiting for my Barcode Scanner to bleep something (which will then "type" it in the active window, it's acting like a keyboard). When the barcode scanner 'types' the 8 digit number - I need the Python script to stop - take the input and save it in a variable.
This is the only psuedocode I could come up with:
// Create variable, store an empty string
// Create a while loop
// Within the while loop, continuously check for input.
// If input has been found, stop the loop and save the input in a variable.
You can use this library on a RaspberryPi: https://pypi.python.org/pypi/readchar
import readchar inputStr = "" while len(inputStr) != 8: inputStr += str(readchar.readchar()) # Quote: "Save it in variable" variable = inputStr # Clean inputStr = ""
Or, to shorten everything:
import readchar variable = "" while len(variable) != 8: variable += str(readchar.readchar())