because lmList = hands[0]['lmList'] appear error：list indices must be integers or slices, not str what can i do

This error occurs because you are trying to access a list element using a string index instead of an integer index. It's likely that the "hands" variable is not a list or does not contain the expected structure.

To resolve this error, you should first check the data type and structure of the "hands" variable using the "type" and "print" functions. Ensure that it is a list and that each element in the list is a dictionary containing the "lmList" key.

If the issue persists, verify that the "hands" variable is being populated correctly and that the data is being parsed correctly from the source.

相关问题

sub_text = SubtitlesClip(subtitles_path, fontsize=24, color='white') NameError: name 'SubtitlesClip' is not defined

对不起，我之前的代码有误。您需要在代码的开头添加以下行来导入`SubtitlesClip`：

from moviepy.video.tools.subtitles import SubtitlesClip

这样，您就可以使用`SubtitlesClip`函数来加载字幕文件并将其与视频合并。以下是修改后的完整代码：

from moviepy.editor import *
from moviepy.video.tools.subtitles import SubtitlesClip

# set input and output file paths
video_path = r"D:\迅雷下载\j疾速.mp4"
subtitles_path = r"D:\迅雷下载\字幕.srt"
output_path = r"D:\迅雷下载\j疾速_with_subs.mp4"

# load video and audio
video = VideoFileClip(video_path)
audio = video.audio

# create text clip with subtitles and set duration to match video
sub_text = SubtitlesClip(subtitles_path, fontsize=24, color='white')

# set text clip to appear at bottom of video
sub_text = sub_text.set_position(('bottom'))

# combine video, audio, and subtitles
result = CompositeVideoClip([video, sub_text.set_audio(audio)])

# write video file to disk
result.write_videofile(output_path, codec='libx264')

请注意，上面的代码仍然假定您的字幕文件格式是`.srt`。如果您的字幕文件格式不同，需要相应更改文件格式。另外，如果您的字幕文件中包含多种语言，您需要使用`subclip`和`set_subtitles`函数来选择要使用的时间范围和字幕语言。

main.c(239): error: #20: identifier "u16DacVal" is undefined DAC_SetChannel1Data(DAC_Align_12b_R,u16DacVal); //初始值为0 main.c(242): error: #268: declaration may not appear after executable statement in block u16 u16DacVal=0; main.c(244): error: #268: declaration may not appear after executable statement in block u16 adcx,adcy; //adcx存放整数，adcy存放小数 main.c(245): error: #268: declaration may not appear after executable statement in block float temp; //temp为DAC设置的数字量 main.c(247): error: #268: declaration may not appear after executable statement in block请给出具体措施修改这些代码

这段代码的问题是变量的声明出现在了可执行语句之后，导致编译器无法识别变量。要解决这个问题，需要将变量的声明放在可执行语句之前。

修改后的代码如下：

u16 u16DacVal=0;
u16 adcx,adcy;   //adcx存放整数，adcy存放小数
float temp;      //temp为DAC设置的数字量

DAC_SetChannel1Data(DAC_Align_12b_R,u16DacVal);  //初始值为0

这样就可以正确声明变量并使用了。