how to fix when error is Xlib.error.DisplayNameError: Bad display name ""

[garyzhang21]

Actual Behavior

from pywinauto.keyboard import SendKeys
/usr/local/python39/lib/python3.9/site-packages/pywinauto/keyboard.py:107: in
from .linux.keyboard import KeySequenceError, KeyAction, PauseAction
/usr/local/python39/lib/python3.9/site-packages/pywinauto/linux/keyboard.py:46: in
_display = Display()
/usr/local/python39/lib/python3.9/site-packages/Xlib/display.py:89: in init
self.display = _BaseDisplay(display)
/usr/local/python39/lib/python3.9/site-packages/Xlib/display.py:71: in init
protocol_display.Display.init(self, *args, **keys)
/usr/local/python39/lib/python3.9/site-packages/Xlib/protocol/display.py:84: in init
name, protocol, host, displayno, screenno = connect.get_display(display)
/usr/local/python39/lib/python3.9/site-packages/Xlib/support/connect.py:73: in get_display
return mod.get_display(display)
/usr/local/python39/lib/python3.9/site-packages/Xlib/support/unix_connect.py:76: in get_display
raise error.DisplayNameError(display)
E Xlib.error.DisplayNameError: Bad display name ""

Specifications

• Pywinauto version: 0.6.6
• Python version and bitness: python 3.9
• Platform and OS: linux

[garyzhang21]

i am not sure whether version issue. but i can not import

[vasily-v-ryabov]

It seems you're trying to import pywinauto on Linux without X display. You should start X display first and then import pywinauto.

[vasily-v-ryabov]

Or maybe environment variable DISPLAY is not set properly. python-xlib should read this env var.