我如何解决IndexError:列表索引超出范围?
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我正在尝试复制此存储库:https://github.com/sujiongming/UCF-101_video_classification。运行2_extract_files.py文件时出现以下错误。
Traceback (most recent call last):
File "2_extract_files.py", line 99, in <module>
main()
File "2_extract_files.py", line 96, in main
extract_files()
File "2_extract_files.py", line 38, in extract_files
video_parts = get_video_parts(video_path)
File "2_extract_files.py", line 76, in get_video_parts
filename = parts[3]
IndexError: list index out of range
代码如下:
def extract_files():
data_file = []
folders = ['./train/', './test/']
for folder in folders:
class_folders = glob.glob(folder + '*')
for vid_class in class_folders:
class_files = glob.glob(vid_class + '/*.avi')
for video_path in class_files:
video_parts = get_video_parts(video_path)
train_or_test, classname, filename_no_ext, filename = video_parts
if not check_already_extracted(video_parts):
src = train_or_test + '/' + classname + '/' +
filename
dest = train_or_test + '/' + classname + '/' +
filename_no_ext + '-%04d.jpg'
call(["ffmpeg", "-i", src, dest])
nb_frames = get_nb_frames_for_video(video_parts)
data_file.append([train_or_test, classname, filename_no_ext, nb_frames])
print("Generated %d frames for %s" % (nb_frames, filename_no_ext))
with open('data_file.csv', 'w') as fout:
writer = csv.writer(fout)
writer.writerows(data_file)
print("Extracted and wrote %d video files." % (len(data_file)))
def get_nb_frames_for_video(video_parts):
train_or_test, classname, filename_no_ext, _ = video_parts
generated_files = glob.glob(train_or_test + '/' + classname + '/' +
filename_no_ext + '*.jpg')
return len(generated_files)
def get_video_parts(video_path):
parts = video_path.split('/')
filename = parts[3]
filename_no_ext = filename.split('.')[0]
classname = parts[2]
train_or_test = parts[1]
return train_or_test, classname, filename_no_ext, filename
谁能告诉我我在做什么错,并指导我如何正确设置列表索引。预先感谢。
Window 10
Python 3.7.6
答案
[建议仅使用os.path.split(video_path)
和os.path.splitext()
并逐步解决,它更安全,也更便于携带:
def get_video_parts(video_path):
head, filename = os.path.split(video_path)
filename_no_ext, ext = os.path.splitext(filename)
head, classname = os.path.split(head)
head, train_or_test = os.path.split(head)
return train_or_test, classname, filename_no_ext, filename
https://docs.python.org/2/library/os.path.html#os.path.split
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IndexError:列表索引超出范围 - python 错误