Python Lessons

Sample 1.py

import msvcrt

# Binary codes for escape and control+C
ESCAPE = b'\x1b'
COTNROL_C = b'\x03'

RGB = [0,0,0]

while True:

    # GET A SINGLE CHARACTER FROM THE USER 
    # (returned as a binary value)
    char = msvcrt.getch()

    # ALLOW THE USER TO BREAK OUT OF THE LOOP
    if char in (ESCAPE, COTNROL_C) :
        break

    # DO SOME THINGS
    if char == b'1': 
        RGB[0] = 1 - RGB[0]
    elif char == b'2':
        RGB[1] = 1 - RGB[1]
    elif char == b'3':
        RGB[2] = 1 - RGB[2]

    # PRINT THE RESULT
    # (Note that end='\r' moves the cursor to the start of the 
    # current line instead of the start of the next line
    print(RGB, end='\r')