我编写了这段代码，并且它之前是可以正常工作的。
from duckduckgo_search import DDGSfrom fastcore.all import *def search_images(keywords, max_images=200): return L(DDGS().images(keywords, max_results=max_images)).itemgot('image')urls = search_images('bird photos', max_images=1)print(urls[0])from fastdownload import download_urldest = 'bird.jpg'download_url(urls[0], dest, show_progress=False)from fastai.vision.all import *im = Image.open(dest)im.to_thumb(256,256)download_url(search_images('forest photos', max_images=1)[0], 'forest.jpg', show_progress=False)Image.open('forest.jpg').to_thumb(256,256)searches = 'forest','bird'path = Path('bird_or_not')我添加了以下代码：
from time import sleepfor o in searches: dest = (path/o) dest.mkdir(exist_ok=True, parents=True) download_images(dest, urls=search_images(f'{o} photo')) sleep(10) # 在搜索之间暂停以避免过载服务器 download_images(dest, urls=search_images(f'{o} sun photo')) sleep(10) download_images(dest, urls=search_images(f'{o} shade photo')) sleep(10) resize_images(path/o, max_size=400, dest=path/o)然后得到了以下错误：
Traceback (most recent call last): File "<string>", line 1, in <module> File "C:\Users\crist\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\spawn.py", line 122, in spawn_main exitcode = _main(fd, parent_sentinel) ^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\crist\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\spawn.py", line 131, in _main prepare(preparation_data) File "C:\Users\crist\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\spawn.py", line 246, in prepare _fixup_main_from_path(data['init_main_from_path']) File "C:\Users\crist\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\spawn.py", line 297, in _fixup_main_from_path main_content = runpy.run_path(main_path, ^^^^^^^^^^^^^^^^^^^^^^^^^ File "<frozen runpy>", line 286, in run_path File "<frozen runpy>", line 98, in _run_module_code File "<frozen runpy>", line 88, in _run_code File "C:\Users\crist\PycharmProjects\AI Deep Learning\main.py", line 23, in <module> download_images(dest, urls=search_images(f'{o} photo')) File "C:\Users\crist\PycharmProjects\Complaint Bot\.venv\Lib\site-packages\fastai\vision\utils.py", line 44, in download_images parallel(partial(_download_image_inner, dest, timeout=timeout, preserve_filename=preserve_filename), File "C:\Users\crist\PycharmProjects\Complaint Bot\.venv\Lib\site-packages\fastcore\parallel.py", line 130, in parallel r = ex.map(f,items, *args, timeout=timeout, chunksize=chunksize, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\crist\PycharmProjects\Complaint Bot\.venv\Lib\site-packages\fastcore\parallel.py", line 85, in map if self.not_parallel == False: self.lock = Manager().Lock() ^^^^^^^^^ File "C:\Users\crist\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\context.py", line 57, in Manager m.start() File "C:\Users\crist\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\managers.py", line 562, in start self._process.start() File "C:\Users\crist\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\process.py", line 121, in start self._popen = self._Popen(self) ^^^^^^^^^^^^^^^^^ File "C:\Users\crist\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\context.py", line 337, in _Popen return Popen(process_obj) ^^^^^^^^^^^^^^^^^^ File "C:\Users\crist\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\popen_spawn_win32.py", line 46, in __init__ prep_data = spawn.get_preparation_data(process_obj._name) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\crist\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\spawn.py", line 164, in get_preparation_data _check_not_importing_main()。有人能解释一下为什么会发生这种情况，以及我该如何修复和避免它吗？
我尝试重新下载库，但不知为何无法更新pip。我还尝试使用调试器，但没有结果。我还尝试通过任务管理器关闭其他应用程序，但这不是问题所在。
回答：
你可以尝试以下方法，将脚本的主要逻辑包装在以下代码中：
if __name__ == '__main__':因为Windows默认等待spawn方法而不是并行处理。我在使用selenium时也遇到了类似的问题，尝试了这个解决方案，并且对我有效。
