pip install nupic throws error

[arb-git]

Hi!

I was trying to get acquainted with nupic library, but it does not work from the very beginning, the "pip install nupic" command.

Running this in a Google Colab notebook (and locally), I get the following error log:
Using cached https://files.pythonhosted.org/packages/86/e8/f31a7c9a3b471f6125abc8addd37c17760e00affb45d6db088394a360086/unittest2-0.5.1.tar.gz
Added unittest2==0.5.1 from https://files.pythonhosted.org/packages/86/e8/f31a7c9a3b471f6125abc8addd37c17760e00affb45d6db088394a360086/unittest2-0.5.1.tar.gz#sha256=aa5de8cdf654d843379c97bd1ee240e86356d3355a97b147a6f3f4d149247a71 (from nupic) to build tracker '/tmp/pip-req-tracker-f2clgsrs'
Running setup.py (path:/tmp/pip-install-1j0aqyyp/unittest2/setup.py) egg_info for package unittest2
Running command python setup.py egg_info
Traceback (most recent call last):
File "", line 1, in
File "/tmp/pip-install-1j0aqyyp/unittest2/setup.py", line 12, in
from unittest2 import version as VERSION
File "/tmp/pip-install-1j0aqyyp/unittest2/unittest2/init.py", line 40, in
from unittest2.collector import collector
File "/tmp/pip-install-1j0aqyyp/unittest2/unittest2/collector.py", line 3, in
from unittest2.loader import defaultTestLoader
File "/tmp/pip-install-1j0aqyyp/unittest2/unittest2/loader.py", line 92
except Exception, e:
^
SyntaxError: invalid syntax
Cleaning up...
Removing source in /tmp/pip-install-1j0aqyyp/nupic
Removing source in /tmp/pip-install-1j0aqyyp/asteval
Removing source in /tmp/pip-install-1j0aqyyp/mock
Removing source in /tmp/pip-install-1j0aqyyp/ordereddict
Removing source in /tmp/pip-install-1j0aqyyp/psutil
Removing source in /tmp/pip-install-1j0aqyyp/pytest
Removing source in /tmp/pip-install-1j0aqyyp/pytest-cov
Removing source in /tmp/pip-install-1j0aqyyp/pytest-xdist
Removing source in /tmp/pip-install-1j0aqyyp/python-dateutil
Removing source in /tmp/pip-install-1j0aqyyp/PyYAML
Removing source in /tmp/pip-install-1j0aqyyp/unittest2
Removed unittest2==0.5.1 from https://files.pythonhosted.org/packages/86/e8/f31a7c9a3b471f6125abc8addd37c17760e00affb45d6db088394a360086/unittest2-0.5.1.tar.gz#sha256=aa5de8cdf654d843379c97bd1ee240e86356d3355a97b147a6f3f4d149247a71 (from nupic) from build tracker '/tmp/pip-req-tracker-f2clgsrs'
Removed build tracker '/tmp/pip-req-tracker-f2clgsrs'
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
Exception information:
Traceback (most recent call last):
File "/usr/local/lib/python3.7/dist-packages/pip/_internal/cli/base_command.py", line 153, in _main
status = self.run(options, args)
File "/usr/local/lib/python3.7/dist-packages/pip/_internal/commands/install.py", line 382, in run
resolver.resolve(requirement_set)
File "/usr/local/lib/python3.7/dist-packages/pip/_internal/legacy_resolve.py", line 201, in resolve
self._resolve_one(requirement_set, req)
File "/usr/local/lib/python3.7/dist-packages/pip/_internal/legacy_resolve.py", line 365, in _resolve_one
abstract_dist = self._get_abstract_dist_for(req_to_install)
File "/usr/local/lib/python3.7/dist-packages/pip/_internal/legacy_resolve.py", line 313, in _get_abstract_dist_for
req, self.session, self.finder, self.require_hashes
File "/usr/local/lib/python3.7/dist-packages/pip/_internal/operations/prepare.py", line 224, in prepare_linked_requirement
req, self.req_tracker, finder, self.build_isolation,
File "/usr/local/lib/python3.7/dist-packages/pip/_internal/operations/prepare.py", line 49, in _get_prepared_distribution
abstract_dist.prepare_distribution_metadata(finder, build_isolation)
File "/usr/local/lib/python3.7/dist-packages/pip/_internal/distributions/source/legacy.py", line 39, in prepare_distribution_metadata
self.req.prepare_metadata()
File "/usr/local/lib/python3.7/dist-packages/pip/_internal/req/req_install.py", line 563, in prepare_metadata
self.metadata_directory = metadata_generator(self)
File "/usr/local/lib/python3.7/dist-packages/pip/_internal/operations/generate_metadata.py", line 124, in _generate_metadata_legacy
command_desc='python setup.py egg_info',
File "/usr/local/lib/python3.7/dist-packages/pip/_internal/utils/subprocess.py", line 242, in call_subprocess
raise InstallationError(exc_msg)
pip._internal.exceptions.InstallationError: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

Is there anything that can be done about it? Honestly, if I can't even install it, what use is it to me. But maybe I am missing something simple. Any help would be much appreciated!

Regards,
A.

[eihli]

Notice the error message.

File "/tmp/pip-install-1j0aqyyp/unittest2/unittest2/loader.py", line 92
except Exception, e:
^
SyntaxError: invalid syntax

It's pointing out a syntax error on the line that contains except Exception, e:.

Python3 exceptions are of the format except Exception as e:. https://docs.python.org/3/reference/compound_stmts.html#except

Python2 exceptions allow a comma or an "as". https://docs.python.org/2.7/reference/compound_stmts.html#except

You're trying to install it with Python3.7. The repo lists 2.7 as a dependency. https://github.com/numenta/nupic

Dependencies
The following dependencies are required to install NuPIC on all operating systems.
    Python 2.7