What key pressed?

[ian]

I test the code below but not sure how to catch non-ASCII key, like Enter, Esc and so on. Thanks

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import msvcrt while True:     if msvcrt.kbhit():         print(msvcrt.getch())

[ichabod801]

Try playing with this:

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import msvcrt while True:     if msvcrt.kbhit():         print(repr(msvcrt.getch()))

Some trial and error should get you the info you need.

[snippsat]

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>>> import msvcrt >>> help(msvcrt.getch) Help on built-in function getch in module msvcrt:    getch()     Read a keypress and return the resulting character as a byte string.            Nothing is echoed to the console. This call will block if a keypress is     not already available, but will not wait for Enter to be pressed. If the     pressed key was a special function key, this will return '\000' or     '\xe0'; the next call will return the keycode. The Control-C keypress     cannot be read with this function.

Can do a test,use repr() to see what really going on.

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import msvcrt    while True:     character = msvcrt.getch()     print(repr(character))     if character == b'q':         break

So i get b'\x00' normal key and b'\xe0' for function keys.
Then can write it like this.

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import msvcrt import sys   while True:     ch = msvcrt.getch()     if ch in b'\x00':         ch = msvcrt.getch() # Second call returns the scan code     if ch in b'\xe0':         ch = msvcrt.getch() # Second call Function keys     if ch == b'q':        sys.exit()     else:        print(f'Key Pressed: {ch}')

Output:
E:\div_code        
λ python scan.py   
Key Pressed: b'h'  
Key Pressed: b'e'  
Key Pressed: b'l'  
Key Pressed: b'l'  
Key Pressed: b'o'  
Key Pressed: b'\x1b
Key Pressed: b'\x1b
Key Pressed: b'\x1b
Key Pressed: b'\r' 
Key Pressed: b'\r' 
Key Pressed: b'\r' 

3 times Esc and 3 times Enter after hello.
Key Scan Codes
So Esc(27) and Enter(13).

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>>> k = b'\x1b' >>> ord(k) 27 >>> k = b'\r' >>> ord(k) 13 >>> if ord(b'\r') == 13: ...     print('Enter key was pressed') ...     Enter key was pressed