3605#20 90.36 Problem: <class 'AttributeError: 'xml.etree.ElementTree.Element' object has no attribute 'getchildren'
3606#20 90.36 S3cmd:   2.1.0
3607#20 90.36 python:   3.9.4 (default, Apr  5 2021, 18:19:42) 
3608#20 90.36 [GCC 10.2.1 20210328]
3609#20 90.36 environment LANG=en_US.UTF-8
3610#20 90.36 
3611#20 90.36 Traceback (most recent call last):
3612#20 90.36   File "/usr/bin/s3cmd", line 3121, in <module>
3613#20 90.36     rc = main()
3614#20 90.36   File "/usr/bin/s3cmd", line 3030, in main
3615#20 90.36     rc = cmd_func(args)
3616#20 90.36   File "/usr/bin/s3cmd", line 1898, in cmd_sync
3617#20 90.36     return cmd_sync_local2remote(args)
3618#20 90.36   File "/usr/bin/s3cmd", line 1871, in cmd_sync_local2remote
3619#20 90.36     ret = _single_process(args[:-1])
3620#20 90.36   File "/usr/bin/s3cmd", line 1625, in _single_process
3621#20 90.36     return _child(destination_base, source_args)
3622#20 90.36   File "/usr/bin/s3cmd", line 1729, in _child
3623#20 90.36     remote_list, dst_exclude_list, remote_total_size = fetch_remote_list(destbase_with_source_list, recursive = True, require_attribs = True)
3624#20 90.36   File "/usr/lib/python3.9/site-packages/S3/FileLists.py", line 471, in fetch_remote_list
3625#20 90.36     objectlist, tmp_total_size = _get_filelist_remote(uri, recursive = True)
3626#20 90.36   File "/usr/lib/python3.9/site-packages/S3/FileLists.py", line 407, in _get_filelist_remote
3627#20 90.36     response = s3.bucket_list(remote_uri.bucket(), prefix = remote_uri.object(),
3628#20 90.36   File "/usr/lib/python3.9/site-packages/S3/S3.py", line 321, in bucket_list
3629#20 90.36     for truncated, dirs, objects in self.bucket_list_streaming(bucket, prefix, recursive, uri_params, limit):
3630#20 90.36   File "/usr/lib/python3.9/site-packages/S3/S3.py", line 356, in bucket_list_streaming
3631#20 90.36     current_list = _get_contents(response["data"])
3632#20 90.36   File "/usr/lib/python3.9/site-packages/S3/S3.py", line 339, in _get_contents
3633#20 90.36     return getListFromXml(data, "Contents")
3634#20 90.36   File "/usr/lib/python3.9/site-packages/S3/Utils.py", line 120, in getListFromXml
3635#20 90.36     return parseNodes(nodes)
3636#20 90.36   File "/usr/lib/python3.9/site-packages/S3/Utils.py", line 67, in parseNodes
3637#20 90.36     for child in node.getchildren():
3638#20 90.36 AttributeError: 'xml.etree.ElementTree.Element' object has no attribute 'getchildren'
3639#20 90.36 
3640#20 90.36 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
3641#20 90.36     An unexpected error has occurred.
3642#20 90.36   Please try reproducing the error using
3643#20 90.36   the latest s3cmd code from the git master
3644#20 90.36   branch found at:
3645#20 90.36     https://github.com/s3tools/s3cmd
3646#20 90.36   and have a look at the known issues list:
3647#20 90.36     https://github.com/s3tools/s3cmd/wiki/Common-known-issues-and-their-solutions
3648#20 90.36   If the error persists, please report the
3649#20 90.36   above lines (removing any private
3650#20 90.36   info as necessary) to:
3651#20 90.36    s3tools-bugs@lists.sourceforge.net
3652#20 90.36 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
According ocrmypdf/OCRmyPDF#583  method  getchildren was deprecated since 3.4 and now it removed from python standard library.
Suppose there must be some changes in code to fix this problem.

But i have no competence in python at all.
          
Oh. I have seen now it was fixed since 2.1.0

Can i ask you to made new minor release like 2.1.1 or so.

Need this fix to update Alpine linux s3cmd package
          
Installing it from specific commit via pip didn't work for me:
~# pip install https://github.com/s3tools/s3cmd/archive/5834228d5bddde3819a3ae5506dd656b62dfb2d1.zip
Collecting https://github.com/s3tools/s3cmd/archive/5834228d5bddde3819a3ae5506dd656b62dfb2d1.zip
  Downloading https://github.com/s3tools/s3cmd/archive/5834228d5bddde3819a3ae5506dd656b62dfb2d1.zip (477 kB)
     |████████████████████████████████| 477 kB 300 kB/s 
Requirement already satisfied: python-dateutil in /usr/local/lib/python3.9/site-packages/python_dateutil-2.8.1-py3.9.egg (from s3cmd===2.1.0-) (2.8.1)
Requirement already satisfied: python-magic in /usr/local/lib/python3.9/site-packages/python_magic-0.4.22-py3.9.egg (from s3cmd===2.1.0-) (0.4.22)
Requirement already satisfied: six>=1.5 in /usr/local/lib/python3.9/site-packages (from python-dateutil->s3cmd===2.1.0-) (1.15.0)
Building wheels for collected packages: s3cmd
  Building wheel for s3cmd (setup.py) ... done
  Created wheel for s3cmd: filename=s3cmd-2.1.0_-py2.py3-none-any.whl size=150977 sha256=150baa01a4f556728e6d8b4a3aac87f86d4d6eaf63230119b386d9a61f985aaa
  Stored in directory: /tmp/pip-ephem-wheel-cache-hbsgj3tg/wheels/7d/b4/64/917d47da08f0dc10c288c8704e965c151b31c0d82b7fd5d6c4
  WARNING: Built wheel for s3cmd is invalid: Metadata 1.2 mandates PEP 440 version, but '2.1.0-' is not
Failed to build s3cmd
Installing collected packages: s3cmd
    Running setup.py install for s3cmd ... done
  DEPRECATION: s3cmd was installed using the legacy 'setup.py install' method, because a wheel could not be built for it. A possible replacement is to fix the wheel build issue reported above. You can find discussion regarding this at https://github.com/pypa/pip/issues/8368.
Successfully installed s3cmd-2.1.0-
~# s3cmd 
sh: s3cmd: not found
But installing it manually via python setup.py install works fine:
ENV S3CMD_COMMIT=5834228d5bddde3819a3ae5506dd656b62dfb2d1
RUN wget https://github.com/s3tools/s3cmd/archive/$S3CMD_COMMIT.zip -O /tmp/s3cmd.zip \
    && cd /tmp/ \
    && unzip /tmp/s3cmd.zip \
    && cd /tmp/s3cmd-$S3CMD_COMMIT/ \
    && python setup.py install \
    && rm -rf /tmp/s3cmd*
          
@trane9991 which pip version are you using? Your commands work for me with python 3.9.0 and pip 20.0.2, without the warnings about the wheel.
Building wheels for collected packages: s3cmd
  Building wheel for s3cmd (setup.py) ... done
  Created wheel for s3cmd: filename=s3cmd-2.1.0_-py2.py3-none-any.whl size=150977 sha256=64ff51d2e13ec7f03a85aef2ce06a76ce9ab83e660d81531f011a4d8a9d7cbe2
  Stored in directory: /tmp/pip-ephem-wheel-cache-5oxmwe2w/wheels/7d/b4/64/917d47da08f0dc10c288c8704e965c151b31c0d82b7fd5d6c4
Successfully built s3cmd
          
Surprised to see that creates the wheel package.

When i do python3 setup.py install last time, it's made /usr/lib/python3.9/site-packages/s3cmd-2.1.0_py3.9.egg instead

And why you noticed pip? Isn't it about setuptools only?  (Sorry, i have not much experience in python ecosystem yet)
          
@salty-horse, pip 21.0.1 here is the Dockerfile to reproduce it:
FROM python:3.9.2-alpine3.13
RUN pip -V && pip install https://github.com/s3tools/s3cmd/archive/5834228d5bddde3819a3ae5506dd656b62dfb2d1.zip
RUN s3cmd
          
It breaks in pip 20.3.4 due to this change:
pip wheel now verifies the built wheel contains valid metadata, and can be installed by a subsequent pip install. This can be disabled with --no-verify. (#9206)
pip wheel --no-verify https://github.com/s3tools/s3cmd/archive/5834228d5bddde3819a3ae5506dd656b62dfb2d1.zip

A new bug should be opened about the failed wheel verification.
          
Thanks to @salty-horse investigation, I have renamed the development version, and so your pip install should be working again I hope.
For the original issue, as reported, it is already fixed in MASTER and I will soon do a new release that will have it included.

Thank you all for your reports.
Sorry, I forgot to mention that after pip wheel --no-verify you still need to run pip install s3cmd-*.whl to install the built wheel.
you are a live saver. Thank you.