Key Listeners in python

Question

Is there a way to do key listeners in python without a huge bloated module such as pygame   An example would be  when I pressed the a key it would print to the console      The a key was pressed    It should also listen for the arrow keys spacebar shift key

User · Answer

I was searching for a simple solution without window focus  Jayk s answer  pynput  works perfect for me  Here is the example how I use it   from pynput import keyboard  def on press key       if key    keyboard Key esc          return False    stop listener     try          k   key char    single-char keys     except          k   key name    other keys     if k in   1    2    left    right       keys of interest           self keys append k     store it in global-like variable         print  Key pressed      k          return False    stop listener  remove this if want more keys  listener   keyboard Listener on press on press  listener start      start to listen on a separate thread listener join      remove if main thread is polling self keys

User · Answer

There is a way to do key listeners in python  This functionality is available through pynput   Command line     pip install pynput   Python code   from pynput import keyboard   your code here

User · Answer

It s unfortunately not so easy to do that  If you re trying to make some sort of text user interface  you may want to look into curses  If you want to display things like you normally would in a terminal  but want input like that  then you ll have to work with termios  which unfortunately appears to be poorly documented in Python  Neither of these options are that simple  though  unfortunately  Additionally  they do not work under Windows  if you need them to work under Windows  you ll have to use PDCurses as a replacement for curses or pywin32 rather than termios     I was able to get this working decently  It prints out the hexadecimal representation of keys you type  As I said in the comments of your question  arrows are tricky  I think you ll agree      usr bin env python import sys import termios import contextlib    contextlib contextmanager def raw mode file       old attrs   termios tcgetattr file fileno        new attrs   old attrs        new attrs 3    new attrs 3   amp    termios ECHO   termios ICANON      try          termios tcsetattr file fileno    termios TCSADRAIN  new attrs          yield     finally          termios tcsetattr file fileno    termios TCSADRAIN  old attrs    def main        print  exit with  C or  D      with raw mode sys stdin           try              while True                  ch   sys stdin read 1                  if not ch or ch    chr 4                       break                 print   02x    ord ch           except  KeyboardInterrupt  EOFError               pass   if   name         main         main

User · Answer

Here s how can do it on Windows            Display series of numbers in infinite loop     Listen to key  s  to stop     Only works on Windows because listening to keys     is platform dependent         msvcrt is a windows specific native module import msvcrt import time    asks whether a key has been acquired def kbfunc         this is boolean for whether the keyboard has bene hit     x   msvcrt kbhit       if x           getch acquires the character encoded in binary ASCII         ret   msvcrt getch       else          ret   False     return ret   begin the counter number   1   infinite loop while True        acquire the keyboard hit if exists     x   kbfunc          if we got a keyboard hit     if x    False and x decode       s            we got the key           because x is a binary  we need to decode to string          use the decode   which is part of the binary object          by default  decodes via utf8          concatenation auto adds a space in between         print   STOPPING  KEY    x decode             break loop         break     else           prints the number         print  number           increment  there s no    in python         number    1          wait half a second         time sleep 0 5

User · Answer

Although I like using the keyboard module to capture keyboard events  I don t like its record   function because it returns an array like  KeyboardEvent  A    KeyboardEvent        which I find kind of hard to read  So  to record keyboard events  I like to use the keyboard module and the threading module simultaneously  like this   import keyboard import string from threading import       I can t find a complete list of keyboard keys  so this will have to do  keys   list string ascii lowercase      Optional code extra keys    keys append  space bar   keys append  backspace   keys append  shift   keys append  esc       def listen key       while True          keyboard wait key          print      Pressed  key  threads    Thread target listen  kwargs   key  key   for key in keys  for thread in threads      thread start

User · Answer

keyboard   sudo pip install keyboard https   github com boppreh keyboard      Take full control of your keyboard with this small Python library  Hook global events  register hotkeys  simulate key presses and much more       Global event hook on all keyboards  captures keys regardless of focus     Listen and sends keyboard events    Works with Windows and Linux  requires sudo   with experimental OS X support  thanks  glitchassassin      Pure Python  no C modules to be compiled    Zero dependencies  Trivial to install and deploy  just copy the files    Python 2 and 3    Complex hotkey support  e g  Ctrl Shift M  Ctrl Space  with controllable timeout    Includes high level API  e g  record and play  add abbreviation     Maps keys as they actually are in your layout  with full internationalization support  e g  Ctrl        Events automatically captured in separate thread  doesn t block main program    Tested and documented    Doesn t break accented dead keys  I m looking at you  pyHook     Mouse support available via project mouse  pip install mouse     From README md   import keyboard  keyboard press and release  shift s  space    keyboard write  The quick brown fox jumps over the lazy dog       Press PAGE UP then PAGE DOWN to type  foobar   keyboard add hotkey  page up  page down   lambda  keyboard write  foobar       Blocks until you press esc  keyboard wait  esc      Record events until  esc  is pressed  recorded   keyboard record until  esc     Then replay back at three times the speed  keyboard play recorded  speed factor 3     Type    then press space to replace with abbreviation  keyboard add abbreviation        my long email example com     Block forever  keyboard wait

[python] Key Listeners in python?

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