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permission needed for Python to access USB drive?

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I got this Python script that reads media files from USB stick. It used to run fine, today it keeps giving me OS Error: [Errno 13] Permission denied: media/myName/usbName when the script runs the command os.listdir().

os.listdir() simply checks what folders and files are in the main folder. It doesn't write anything, so why is there a permission error? I can use the USB stick just fine, open, add and delete files in it myself. I'm not very experienced with Linux, what might be the issue? Some kind of permission, etc. setting for the script file or the usb drive that somehow magically changed without me doing anything?

Using Lubuntu 14.04.

permissions scripting python usb-drive

share|improve this question

asked Sep 25 '15 at 22:15

Leo ErvinLeo Ervin

11111 bronze badge

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  How exactly are you executing the script?
  
  – steeldriver
  Sep 26 '15 at 0:11
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  python path/to/main.py
  
  – Leo Ervin
  Sep 26 '15 at 6:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This might give a hint: I installed the same OS on my laptop and ran the exact same script on it, no errors, no permission issues. Also, I just deleted every "folder" in /media/myName, plugged the drive and ran the script again. Ran fine. Why do the folders remain in media/myName after the drive is physically unplugged? Does that give a hint?
  
  – Leo Ervin
  Sep 26 '15 at 9:06
  

  
  
  
  

add a comment | 

0

I got this Python script that reads media files from USB stick. It used to run fine, today it keeps giving me OS Error: [Errno 13] Permission denied: media/myName/usbName when the script runs the command os.listdir().

os.listdir() simply checks what folders and files are in the main folder. It doesn't write anything, so why is there a permission error? I can use the USB stick just fine, open, add and delete files in it myself. I'm not very experienced with Linux, what might be the issue? Some kind of permission, etc. setting for the script file or the usb drive that somehow magically changed without me doing anything?

Using Lubuntu 14.04.

permissions scripting python usb-drive

share|improve this question

asked Sep 25 '15 at 22:15

Leo ErvinLeo Ervin

11111 bronze badge

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  How exactly are you executing the script?
  
  – steeldriver
  Sep 26 '15 at 0:11
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  python path/to/main.py
  
  – Leo Ervin
  Sep 26 '15 at 6:26
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This might give a hint: I installed the same OS on my laptop and ran the exact same script on it, no errors, no permission issues. Also, I just deleted every "folder" in /media/myName, plugged the drive and ran the script again. Ran fine. Why do the folders remain in media/myName after the drive is physically unplugged? Does that give a hint?
  
  – Leo Ervin
  Sep 26 '15 at 9:06
  

  
  
  
  

add a comment | 

I got this Python script that reads media files from USB stick. It used to run fine, today it keeps giving me OS Error: [Errno 13] Permission denied: media/myName/usbName when the script runs the command os.listdir().

os.listdir() simply checks what folders and files are in the main folder. It doesn't write anything, so why is there a permission error? I can use the USB stick just fine, open, add and delete files in it myself. I'm not very experienced with Linux, what might be the issue? Some kind of permission, etc. setting for the script file or the usb drive that somehow magically changed without me doing anything?

Using Lubuntu 14.04.

permissions scripting python usb-drive

share|improve this question

asked Sep 25 '15 at 22:15

Leo ErvinLeo Ervin

11111 bronze badge

share|improve this question

asked Sep 25 '15 at 22:15

Leo ErvinLeo Ervin

11111 bronze badge

share|improve this question

asked Sep 25 '15 at 22:15

Leo ErvinLeo Ervin

11111 bronze badge

asked Sep 25 '15 at 22:15

Leo ErvinLeo Ervin

11111 bronze badge

asked Sep 25 '15 at 22:15

Leo ErvinLeo Ervin

11111 bronze badge

1 Answer
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If you want to walk all the subfolders, then try os.walk.
Following example shows how to use it.

import os



for (dirPath, dirNames, fileNames) in os.walk(rootPath):

    for fileName in fileNames:

        filePath = dirPath + '\' + fileName

        print(filePath)

    for dirName in dirNames:

        path = dirPath + '\' + dirName

        print(path)

share|improve this answer

answered 26 mins ago

나윤재나윤재

1

New contributor

나윤재 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

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0

If you want to walk all the subfolders, then try os.walk.
Following example shows how to use it.

import os



for (dirPath, dirNames, fileNames) in os.walk(rootPath):

    for fileName in fileNames:

        filePath = dirPath + '\' + fileName

        print(filePath)

    for dirName in dirNames:

        path = dirPath + '\' + dirName

        print(path)

share|improve this answer

answered 26 mins ago

나윤재나윤재

1

New contributor

나윤재 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

0

If you want to walk all the subfolders, then try os.walk.
Following example shows how to use it.

import os



for (dirPath, dirNames, fileNames) in os.walk(rootPath):

    for fileName in fileNames:

        filePath = dirPath + '\' + fileName

        print(filePath)

    for dirName in dirNames:

        path = dirPath + '\' + dirName

        print(path)

share|improve this answer

answered 26 mins ago

나윤재나윤재

1

New contributor

나윤재 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

If you want to walk all the subfolders, then try os.walk.
Following example shows how to use it.

import os



for (dirPath, dirNames, fileNames) in os.walk(rootPath):

    for fileName in fileNames:

        filePath = dirPath + '\' + fileName

        print(filePath)

    for dirName in dirNames:

        path = dirPath + '\' + dirName

        print(path)

share|improve this answer

answered 26 mins ago

나윤재나윤재

1

New contributor

나윤재 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

import os



for (dirPath, dirNames, fileNames) in os.walk(rootPath):

    for fileName in fileNames:

        filePath = dirPath + '\' + fileName

        print(filePath)

    for dirName in dirNames:

        path = dirPath + '\' + dirName

        print(path)

share|improve this answer

answered 26 mins ago

나윤재나윤재

1

New contributor

나윤재 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

answered 26 mins ago

나윤재나윤재

1

New contributor

나윤재 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

answered 26 mins ago

나윤재나윤재

1