Screenshot a window on Windows and OCR using Python and Tesseract

main.py

"""
Requires installation of Tesseract for Windows: https://github.com/UB-Mannheim/tesseract/wiki
"""
import pyautogui
import pytesseract
import win32gui

# Get the handle of the window you want to capture
window_handle = win32gui.FindWindow(None, "Task Manager")

# Get the position and size of the window
window_rect = win32gui.GetWindowRect(window_handle)
window_pos_x = window_rect[0]
window_pos_y = window_rect[1]
window_width = window_rect[2] - window_rect[0]
window_height = window_rect[3] - window_rect[1]

# Take a screenshot of the window
screenshot = pyautogui.screenshot(
    region=(window_pos_x, window_pos_y, window_width, window_height)
)

text = pytesseract.image_to_string(screenshot)

print(text)
# Save the screenshot to a file
screenshot.save("screenshot.png")

pyproject.toml

[tool.poetry]
name = "test-screenshot"
version = "0.1.0"
description = ""
authors = ["Your Name <you@example.com>"]
readme = "README.md"
packages = [{include = "test_screenshot"}]

[tool.poetry.dependencies]
python = "^3.11"
pyautogui = "^0.9.53"
pywin32 = "^305"
pillow = "^9.4.0"
pytesseract = "^0.3.10"


[build-system]
requires = ["poetry-core"]
build-backend = "poetry.core.masonry.api"