/detectWithWebcam列表索引处的IndexError超出范围

Question

环境：

请求方法：GET请求URL:http://127.0.0.1:8000/detectWithWebcam

Django版本：2.2Python版本：3.9.7已安装的应用程序：

['main',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'django_filters']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']

错误：

Traceback:

File "C:UsersINTROVERTEDDownloadsCompressedFacialRecognitionForPolice-mastervenv1libsite-packagesdjangocorehandlersexception.py" in inner
34.             response = get_response(request)

File "C:UsersINTROVERTEDDownloadsCompressedFacialRecognitionForPolice-mastervenv1libsite-packagesdjangocorehandlersbase.py" in _get_response
115.                 response = self.process_exception_by_middleware(e, request)

File "C:UsersINTROVERTEDDownloadsCompressedFacialRecognitionForPolice-mastervenv1libsite-packagesdjangocorehandlersbase.py" in _get_response
113.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "C:UsersINTROVERTEDDownloadsCompressedFacialRecognitionForPolice-masterFacialRecognitionForPolice-mastermainviews.py" in detectWithWebcam
303.         encodings[i]=face_recognition.face_encodings(images[i])[0]

Exception Type: IndexError at /detectWithWebcam
Exception Value: list index out of range

Answer 1

因此Indexerror表示指定的索引不存在于列表中。以下代码将引发索引错误：

pylist = [1, 2, 3, 4, 5]
print(pylist[5])

这是因为python从0开始计数，所以要访问数字5，您需要按4进行索引。

在您的特定情况下，您应该尝试在不进行索引的情况下打印出值，以查看是哪种代码导致了索引错误。