为什么我在 Python3 中收到此错误：IndexError：列表索引超出范围

Question

The title sort of explains itself.

Here's my code:

import subprocess
import os
import sys

def log_face(name):
    #create a directory under the training folder with the new persons name
    path = ("./images/train/" + name)
    if not os.path.exists(path):
        mkdirexe = ("mkdir " + path)
        subprocess.call([mkdirexe], shell=True)
    
    #copy the most recent image into the new named folder
    copyexe = ("cp image_cam.jpg " + path)
    subprocess.call([copyexe], shell=True)

#if called direct then run the function
if __name__ == '__main__':
    name = sys.argv[1]
    print(log_face(name))

I don't think it's in any of the modules...

Thanks!

Answer 1

Likely name = sys.argv[1] is where you're running into the IndexError.

You're calling the first command line argument without passing anything in. It doesn't prompt you for any input and will fail with an IndexError.

Edit: Didn't see Grismar's comment!