support for Python 3.9

[jugmac00]

Hi, I was recommended to install pipx via this package, but this breaks on Python 3.9

❯ python3.9 -m pip install pipx-in-pipx
Collecting pipx-in-pipx
  Downloading https://files.pythonhosted.org/packages/f8/31/944ecb8cff1d43b84674de558d136e8491d2d70afc3001aa8bb854e58894/pipx-in-pipx-1.0.1.tar.gz
Exception:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/pip/basecommand.py", line 215, in main
    status = self.run(options, args)
  File "/usr/lib/python3/dist-packages/pip/commands/install.py", line 353, in run
    wb.build(autobuilding=True)
  File "/usr/lib/python3/dist-packages/pip/wheel.py", line 749, in build
    self.requirement_set.prepare_files(self.finder)
  File "/usr/lib/python3/dist-packages/pip/req/req_set.py", line 376, in prepare_files
    discovered_reqs.extend(self._prepare_file(
  File "/usr/lib/python3/dist-packages/pip/req/req_set.py", line 634, in _prepare_file
    abstract_dist.prep_for_dist()
  File "/usr/lib/python3/dist-packages/pip/req/req_set.py", line 129, in prep_for_dist
    self.req_to_install.run_egg_info()
  File "/usr/lib/python3/dist-packages/pip/req/req_install.py", line 412, in run_egg_info
    self.setup_py, self.name,
  File "/usr/lib/python3/dist-packages/pip/req/req_install.py", line 387, in setup_py
    import setuptools  # noqa
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 664, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 627, in _load_backward_compatible
  File "<frozen zipimport>", line 259, in load_module
  File "/usr/share/python-wheels/setuptools-39.0.1-py2.py3-none-any.whl/setuptools/__init__.py", line 14, in <module>
    from setuptools.dist import Distribution, Feature
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 664, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 627, in _load_backward_compatible
  File "<frozen zipimport>", line 259, in load_module
  File "/usr/share/python-wheels/setuptools-39.0.1-py2.py3-none-any.whl/setuptools/dist.py", line 24, in <module>
    from setuptools.depends import Require
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 664, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 627, in _load_backward_compatible
  File "<frozen zipimport>", line 259, in load_module
  File "/usr/share/python-wheels/setuptools-39.0.1-py2.py3-none-any.whl/setuptools/depends.py", line 7, in <module>
    from .py33compat import Bytecode
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 664, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 627, in _load_backward_compatible
  File "<frozen zipimport>", line 259, in load_module
  File "/usr/share/python-wheels/setuptools-39.0.1-py2.py3-none-any.whl/setuptools/py33compat.py", line 54, in <module>
    unescape = getattr(html, 'unescape', html_parser.HTMLParser().unescape)
AttributeError: 'HTMLParser' object has no attribute 'unescape'

[gaborbernat]

This has less to do with python3.9 support and more to do with the ancient setuptools Ubuntu packages here /usr/share/python-wheels/ 🤔

[jugmac00]

Thanks for the feedback! I am running Ubuntu 20.04 - not the lasted but not an especially old LTS version.

[gaborbernat]

Well, that's an Ubuntu problem, it comes with 4+ years old setuptools - https://pypi.org/project/setuptools/39.0.1/ This package is meant to work with something more recent.