python中使用pyautogui.locateCenterOnScreen（）代码时出错 求解

import pyautogui
a = pyautogui.locateCenterOnScreen('sdr.png')
print(a)

Traceback (most recent call last):
  File "C:\Users\97817\PycharmProjects\pythonProject\demo.py", line 2, in <module>
    a = pyautogui.locateCenterOnScreen('sdr.png')
  File "C:\Users\97817\AppData\Local\Programs\Python\Python39\lib\site-packages\pyscreeze-0.1.28-py3.9.egg\pyscreeze\__init__.py", line 413, in locateCenterOnScreen
  File "C:\Users\97817\AppData\Local\Programs\Python\Python39\lib\site-packages\pyscreeze-0.1.28-py3.9.egg\pyscreeze\__init__.py", line 373, in locateOnScreen
  File "C:\Users\97817\AppData\Local\Programs\Python\Python39\lib\site-packages\pyscreeze-0.1.28-py3.9.egg\pyscreeze\__init__.py", line 353, in locate
  File "C:\Users\97817\AppData\Local\Programs\Python\Python39\lib\site-packages\pyscreeze-0.1.28-py3.9.egg\pyscreeze\__init__.py", line 262, in _locateAll_python
FileNotFoundError: [Errno 2] No such file or directory: 'sdr.png'

没有找到sdr.png
你将sdr.png放置在demo.py同目录下即可