Udemy-dl: TypeError: unbound method __init__() must be called with Downloader instance as first argument (got InternUdemyLectureAssets instance instead)

[EnoqueEsteves]

Describe the bug
This has only recently started to happen when using the udemy-dl.py to download a course. This happens on both an update to an already downloaded course as well as downloading a new one.

To Reproduce
Steps to reproduce the behavior:

1. udemy course url:

• https://www.udemy.com/course/the-complete-ios-developer-course-with-swift (first time downlad),
• https://www.udemy.com/learn-devops-the-complete-kubernetes-course (previously downloaded url)

1. Run the following command to reproduce the error.

   ./udemy-dl.py "https://www.udemy.com/course/the-complete-ios-developer-course-with-swift" -k ./authcookie.txt -o ~/udemy_downloads/
   

2. See error:

                 __                               ____
     __  ______/ /__  ____ ___  __  __      ____/ / /
     / / / / __  / _ \/ __ `__ \/ / / /_____/ __  / /
   / /_/ / /_/ /  __/ / / / / / /_/ /_____/ /_/ / /
   \__,_/\__,_/\___/_/ /_/ /_/\__, /      \__,_/_/
                             /____/
                                   Version : 0.5
                                   Author  : Nasir Khan (r0ot h3x49)
                                   Github  : https://github.com/r0oth3x49
   
   [*] : Trying to login using cookies ...
   [+] : Logged in successfully.
   [*] : Downloaded course information .. (done)
   [*] : Trying to logout now...
   [+] : Logged out successfully.
   [*] : Course 'the-complete-ios-developer-course-with-swift'.
   [+] : Chapter(s) (26).
   [*] : Lecture(s) (299).
   
   [*] : Downloading chapter : (1 of 26)
   [+] : Chapter (01 Introduction)
   [*] : Found (2) lectures ...
   
   [*] : Lecture(s) : (1 of 2)
   [*] : Downloading (001 Introduction)
   [*] : 48.43MB/48.43MB 100.00% |##############################| 8.64MB/s
   [+] : Downloaded  (001 Introduction)
   
   [*] : Downloading subtitle(s)
   [*] : Downloading (001 Introduction-en)
   [*] : 2.54KB/2.54KB 100.00% |##############################| 30.44kB/s
   [+] : Downloaded  (001 Introduction-en)
   Traceback (most recent call last):
     File "./udemy-dl.py", line 1432, in <module>
       main()
     File "./udemy-dl.py", line 1091, in main
       udemy.course_download(path=options.output, quality=options.quality, unsafe=options.unsafe)
     File "./udemy-dl.py", line 467, in course_download
       lecture_assets = lecture.assets
     File "/mnt/g/udemy-downloader/udemy-dl/udemy/_shared.py", line 341, in assets
       self._process_assets()
     File "/mnt/g/udemy-downloader/udemy-dl/udemy/_internal.py", line 119, in _process_assets
       assets  =   [InternUdemyLectureAssets(z, self) for z in self._info['assets']] if self._assets_count > 0 else []
     File "/mnt/g/udemy-downloader/udemy-dl/udemy/_internal.py", line 143, in __init__
       super(InternUdemyLectureAssets, self).__init__(parent)
     File "/mnt/g/udemy-downloader/udemy-dl/udemy/_shared.py", line 521, in __init__
       Downloader.__init__(self)
   TypeError: unbound method __init__() must be called with Downloader instance as first argument (got InternUdemyLectureAssets instance instead)
   

Expected behavior
Successfully downloads the content both for new and previously downloaded courses

Screenshots
n/a see error out put

Python Environment (please complete the following information):

• OS Platform: Ubuntu 18.04 (on Windows 10 WSL)
• Python Version 2.7.15+ (default, Jul 9 2019, 16:51:35), [GCC 7.4.0]

Additional context
Has been working correctly for the last 6 months. The previous time it was run was 1 week prior to it failing. I also did a recent git pull as well as a sudo apt update && sudo apt upgrade to see if that resolved the issue but it did not help.

[r0oth3x49]

@EnoqueEsteves need more explanation see the issue reporting template, i have just added

[EnoqueEsteves]

@r0oth3x49 - apologies I have updated the issue following you template. Let us know if you require any further information or clarification.

[r0oth3x49]

@EnoqueEsteves r you using the recent master because this error is i guess already reported and i have fixed take a look at #428 .

clone the recent maste and let me know.

[EnoqueEsteves]

@r0oth3x49 - I have just kicked it off and it appears to be working now. Once the run finishes with no issue I will let you know.

[r0oth3x49]

@r0oth3x49 - I have just kicked it off and it appears to be working now. Once the run finishes with no issue I will let you know.

you could just run it against that particular chapter containing assets information ..

[EnoqueEsteves]

It has has passed the point at which it was failing previously so all looking good so far

[EnoqueEsteves]

Yup all good. you can close this issue as I do believe it is resolved by the earlier fix