报错信息
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
Cell In[3], line 1
----> 1 pyautogui.screenshot()
File ~/anaconda3/lib/python3.11/site-packages/pyscreeze/__init__.py:527, in _screenshot_osx(imageFilename, region)
523 """
524 TODO
525 """
526 # TODO - use tmp name for this file.
--> 527 if tuple(PIL__version__) < (6, 2, 1):
530 # Use the screencapture program if Pillow is older than 6.2.1, which
531 # is when Pillow supported ImageGrab.grab() on macOS. (It may have
532 # supported it earlier than 6.2.1, but I haven't tested it.)
533 if imageFilename is None:
534 tmpFilename = 'screenshot%s.png' % (datetime.datetime.now().strftime('%Y-%m%d_%H-%M-%S-%f'))
TypeError: '<' not supported between instances of 'str' and 'int'
可见指向 527 行的代码，对比2个变量时，出现类型错误，这是pyautogui的bug，我们只能自己来修复该错误。该语句是对比版本号，当PIL的版本小于 6.2.1时，才进入if语句。
PIL即Pillow库
通过 pip show Pillow 查看已安装的Pillow版本
pip show Pillow
Name: Pillow
Version: 9.4.0
Summary: Python Imaging Library (Fork)
Home-page: https://python-pillow.org
Author: Alex Clark (PIL Fork Author)
Author-email: aclark@python-pillow.org
License: HPND
可见在我的系统里，并不会进入if语句。
从报错信息可见文件路径为~/anaconda3/lib/python3.11/site-packages/pyscreeze/__init__.py，打开该文件，这里我们直接把 527行的代码改成 if False: 即可。
最终代码如下：
def _screenshot_osx(imageFilename=None, region=None):
"""
TODO
"""
# TODO - use tmp name for this file.
# if tuple(PIL__version__) < (6, 2, 1):
# 这里报错了。并且我使用的是9.4.0，并不会进入判断语句
if False:
# Use the screencapture program if Pillow is older than 6.2.1, which
# is when Pillow supported ImageGrab.grab() on macOS. (It may have
# supported it earlier than 6.2.1, but I haven't tested it.)
if imageFilename is None:
tmpFilename = 'screenshot%s.png' % (datetime.datetime.now().strftime('%Y-%m%d_%H-%M-%S-%f'))
else:
tmpFilename = imageFilename
subprocess.call(['screencapture', '-x', tmpFilename])
im = Image.open(tmpFilename)
if region is not None:
assert len(region) == 4, 'region argument must be a tuple of four ints'
region = [int(x) for x in region]
im = im.crop((region[0], region[1], region[2] + region[0], region[3] + region[1]))
os.unlink(tmpFilename) # delete image of entire screen to save cropped version
im.save(tmpFilename)
else:
# force loading before unlinking, Image.open() is lazy
im.load()
if imageFilename is None:
os.unlink(tmpFilename)
else:
# Use ImageGrab.grab() to get the screenshot if Pillow version 6.3.2 or later is installed.
im = ImageGrab.grab()
return im
保存并重启虚拟环境。