Unable to retrieve the keyboard key from the variable

Question

Unable to retrieve the keyboard key from the variable

I am currently working on a program that is designed to automatically press keyboard keys, but I am facing some issues. The program seems to have trouble understanding the key value obtained from Tkinter Entry.

When attempting to use pynput to press the key, it throws an error stating:

AttributeError: 'str' object has no attribute 'value'

On the other hand, when using pyautogui to press the key, nothing happens - there isn't even an error returned.

This is the problematic part of the code:

        #Autoclicking keyboard key (using pynput) (not working)
        #hold = determines whether to autoclick or hold the key
        #clkdel = delay between keyboard presses
        #keyprsd = key to be pressed (tk.StringVar)
        #lf7 = listener to determine start/stop conditions
        if int(hold.get()) == 1:
            print('Starting keyboard pressing...')
            while self.run == True:
                print('Pressed')
                master.after(clkdel, keyct.press(keyprsd.get()))
            lf7.stop()

Full Code:

//PLACEHOLDER FOR CUSTOM CODE//

python keyboard tkinter-entry pyautogui pynput

Answer 1

Answer №1

The main issue you are facing is that you are only importing the mouse controller.

   from pynput.mouse import Button, Controller

You are then using it for both mouse and keyboard operations.

   mousect = Controller()
   keyct = Controller()

However, they have different controllers that function in distinct ways.

The keyboard controller can receive a string input while the mouse controller expects an object with .value.

To resolve this, you should utilize different controllers for each device.

   from pynput import mouse
   from pynput import keyboard

   mousect = mouse.Controller()
   keyct = keyboard.Controller()

This will address the main problem at hand.

Another issue lies in the fact that the after() command (similar to command= and bind()) requires a function name without any arguments. You could use lambda or place the arguments after the function name like in command= or bind().

   master.after(clkdel, keyct.press, keyprsd.get())

   master.after(clkdel, mousect.click, Button.left)

   master.after(clkdel, mousect.click, Button.right)

By the way: Another problem is that your code is hard to read. Consider moving nested functions outside the class or creating a class method. This way, you won't need to use global, but rather self. You might also want to use more descriptive variable names - such as key_controller instead of keyct.

Refer to: PEP 8 -- Style Guide for Python Code

EDIT:

The Listener provides a special object with information about the pressed key. When you assign it to a StringVar as a string, and later retrieve it as a string and use it in press(), it may work for normal keys but not for special keys.

You should keep the original object and utilize it in press() for all keys (normal and special). For example:

   def ksetcall(key):

       self.key = key   # keeping the original object 

       print('{} was pressed'.format(key))
       keyprsd.set(key)
       return False

And then, later on:

 keyct.press(self.key)

Instead of keyct.press(keyprsd.get())

Answer 2

The main issue you are facing is that you are only importing the mouse controller.

   from pynput.mouse import Button, Controller

You are then using it for both mouse and keyboard operations.

   mousect = Controller()
   keyct = Controller()

However, they have different controllers that function in distinct ways.

The keyboard controller can receive a string input while the mouse controller expects an object with .value.

To resolve this, you should utilize different controllers for each device.

   from pynput import mouse
   from pynput import keyboard

   mousect = mouse.Controller()
   keyct = keyboard.Controller()

This will address the main problem at hand.

Another issue lies in the fact that the after() command (similar to command= and bind()) requires a function name without any arguments. You could use lambda or place the arguments after the function name like in command= or bind().

   master.after(clkdel, keyct.press, keyprsd.get())

   master.after(clkdel, mousect.click, Button.left)

   master.after(clkdel, mousect.click, Button.right)

By the way: Another problem is that your code is hard to read. Consider moving nested functions outside the class or creating a class method. This way, you won't need to use global, but rather self. You might also want to use more descriptive variable names - such as key_controller instead of keyct.

Refer to: PEP 8 -- Style Guide for Python Code

EDIT:

The Listener provides a special object with information about the pressed key. When you assign it to a StringVar as a string, and later retrieve it as a string and use it in press(), it may work for normal keys but not for special keys.

You should keep the original object and utilize it in press() for all keys (normal and special). For example:

   def ksetcall(key):

       self.key = key   # keeping the original object 

       print('{} was pressed'.format(key))
       keyprsd.set(key)
       return False

And then, later on:

 keyct.press(self.key)

Instead of keyct.press(keyprsd.get())

Unable to retrieve the keyboard key from the variable

Answer №1

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