Confusing Python2/Python3 failure mode

[rincebrain]

Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2018.07.04. If it's not, read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2018.07.04

Before submitting an issue make sure you have:

• At least skimmed through the README, most notably the FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones
• Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser

What is the purpose of your issue?

• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
• Question
• Other

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If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

Add the -v flag to your command line you run youtube-dl with (youtube-dl -v <your command line>), copy the whole output and insert it here. It should look similar to one below (replace it with your log inserted between triple ```):

./youtube-dl:

[debug] System config: []
[debug] User config: [u'--prefer-ffmpeg']
[debug] Custom config: []
[debug] Command-line args: [u'-v', u'-u', u'PRIVATE', u'--socket-timeout', u'5', u'--retries', u'infinite', u'https://www.youtube.com/feed/history', u'-o', u'history/%(title)s.%(ext)s', u'--download-archive', u'history/dl_archive', u'-i']
Type account password and press [Return]:
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.07.04
[debug] Python version 2.7.13 (CPython) - Linux-4.9.0-6-amd64-x86_64-with-debian-9.4
[debug] exe versions: avconv 3.2.10-1, avprobe 3.2.10-1, ffmpeg 3.2.10-1, ffprobe 3.2.10-1, phantomjs ., rtmpdump 2.4
[debug] Proxy map: {}
[youtube:history] Downloading login page
[youtube:history] Looking up account info
[youtube:history] Logging in
WARNING: Unable to login: Invalid password
[youtube:history] Youtube History: Downloading webpage
[download] Downloading playlist: Youtube History
[youtube:history] playlist Youtube History: Downloading 0 videos
[download] Finished downloading playlist: Youtube History

python3 ./youtube-dl:

[debug] System config: []
[debug] User config: ['--prefer-ffmpeg']
[debug] Custom config: []
[debug] Command-line args: ['-v', '-u', 'PRIVATE', '--socket-timeout', '5', '--retries', 'infinite', 'https://www.youtube.com/feed/history', '-o', 'history/%(title)s.%(ext)s', '--download-archive', 'history/dl_archive', '-i']
Type account password and press [Return]:
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.07.04
[debug] Python version 3.5.3 (CPython) - Linux-4.9.0-6-amd64-x86_64-with-debian-9.4
[debug] exe versions: avconv 3.2.10-1, avprobe 3.2.10-1, ffmpeg 3.2.10-1, ffprobe 3.2.10-1, phantomjs ., rtmpdump 2.4
[debug] Proxy map: {}
[youtube:history] Downloading login page
[youtube:history] Looking up account info
[youtube:history] Logging in
[youtube:history] Checking cookie
[youtube:history] Youtube History: Downloading webpage
[download] Downloading playlist: Youtube History
[youtube:history] Youtube History: Downloading page #1
^C
ERROR: Interrupted by user

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Description of your issue, suggested solution and other information

I have a script which I periodically use to fetch the history playlist of an account for watching later - you can see the arguments it's invoked with in the logs above.

Today, I tried running said script, and it informed me the password was incorrect. I tried again, and again it informed me I was wrong. At that point, I copied-and-pasted the password from a text editor to be sure I had typed it correctly, and still.

I pulled up a new browser session, confirmed pasting said password worked for signing into Youtube, and tried again, to no avail.

For no good reason, I tried invoking youtube-dl with python3 ./youtube-dl instead of just ./youtube-dl, and lo, with python3, it works fine, every time. If I revert to using ./youtube-dl, it fails, every time. (In the interest of being complete, I tried python2 ./youtube-dl, and it also fails every time.)

(I also tried hardcoding the password using -p in the script, to be sure I wasn't somehow paste-mangling it, and the above behavior remains.)

[dstftw]

Most likely your script improperly handles/passes strings.

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'BaW_jenozKc', u'-v', u'-u', u'PRIVATE', u'-p', u'PRIVATE']
[debug] Encodings: locale cp1251, fs mbcs, out cp866, pref cp1251
[debug] youtube-dl version 2018.06.25
[debug] Python version 2.7.12 (CPython) - Windows-10-10.0.10240
[debug] exe versions: ffmpeg N-85653-gb4330a0, ffprobe N-85653-gb4330a0, phantomjs 2.1.1, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] Downloading login page
[youtube] Looking up account info
[youtube] Logging in
Type 2-step verification code and press [Return]:
[youtube] Submitting TFA code
[youtube] Checking cookie
[youtube] BaW_jenozKc: Downloading webpage
[youtube] BaW_jenozKc: Downloading video info webpage
...

[rincebrain]

I tried invoking it on the command-line, and whether interactively or passing the password single-quoted, it still fails.

Also, the password hasn't changed, nor has the script, and it just started failing.

[dstftw]

See --print-traffic for what's actually being sent.
For any further investigations you must provide reproducible account credentials.