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pip3 "build" will not install

when I try to install build with
sudo pip3 install build
the following error occurs:
Exception:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/pip/_internal/cli/base_command.py", line 143, in main
status = self.run(options, args)
File "/usr/lib/python3/dist-packages/pip/_internal/commands/install.py", line 386, in run
use_user_site=options.use_user_site,
File "/usr/lib/python3/dist-packages/pip/_internal/req/__init__.py", line 49, in install_given_reqs
**kwargs
File "/usr/lib/python3/dist-packages/pip/_internal/req/req_install.py", line 760, in install
use_user_site=use_user_site, pycompile=pycompile,
File "/usr/lib/python3/dist-packages/pip/_internal/req/req_install.py", line 382, in move_wheel_files
warn_script_location=warn_script_location,
File "/usr/lib/python3/dist-packages/pip/_internal/wheel.py", line 215, in move_wheel_files
prefix=prefix,
File "/usr/lib/python3/dist-packages/pip/_internal/locations.py", line 153, in distutils_scheme
d.parse_config_files()
File "/usr/lib/python3.7/distutils/dist.py", line 406, in parse_config_files
parser.read(filename)
File "/usr/lib/python3.7/configparser.py", line 696, in read
self._read(fp, filename)
File "/usr/lib/python3.7/configparser.py", line 1091, in _read
fpname, lineno)
configparser.DuplicateOptionError: While reading from 'setup.cfg' [line 10]: option 'url' in section 'metadata' already exists
while installing the collected packages. The install never completes; pip says it was never installed. I would greatly appreciate any help troubleshooting.

In the off chance anyone else has this problem, I found a temporary fix that will probably make python stop working in a few days.. I went to ln 1088-1090 of /usr/lib/python3.7/configparser.py and replaced that bit about raising an exception after an if statement with
while (self._strict and
(sectname, optname) in elements_added):
elements_added.pop()
This seemed to have fixed the problem, albeit not in the most pretty method, as installation pf build and use of sdist now works ok.

Runtimeerror (python 3.5 or later is required) when I try to install any library

I am trying to install some libraries to use on my python 3.4, but every time that I run pip install ("name of library") , it returns the following error:
Collecting pyautogui
Using cached https://files.pythonhosted.org/packages/35/71/a7d328fe19667777fb0c371ca346c89d1b380f7778fa1ba65aca1090478c/PyAutoGUI-0.9.49.tar.gz
Exception:
Traceback (most recent call last):
File "C:\Python34\lib\site-packages\pip\basecommand.py", line 232, in main
status = self.run(options, args)
File "C:\Python34\lib\site-packages\pip\commands\install.py", line 339, in run
requirement_set.prepare_files(finder)
File "C:\Python34\lib\site-packages\pip\req\req_set.py", line 385, in prepare_files
req_to_install.run_egg_info()
File "C:\Python34\lib\site-packages\pip\req\req_install.py", line 310, in run_egg_info
self.setup_py, self.name,
File "C:\Python34\lib\site-packages\pip\req\req_install.py", line 281, in setup_py
import setuptools # noqa
File "C:\Python34\lib\site-packages\setuptools\__init__.py", line 17, in <module>
import setuptools.version
File "C:\Python34\lib\site-packages\setuptools\version.py", line 1, in <module>
import pkg_resources
File "C:\Python34\lib\site-packages\pkg_resources\__init__.py", line 93, in <module>
raise RuntimeError("Python 3.5 or later is required")
RuntimeError: Python 3.5 or later is required

You are seeing this because pip 19.2 has dropped support for Python 3.4.
Good news: The get-pip.py script has been updated to include a 3.4-specific option. You can use the following command to request pip 19.1, the last version of pip that supports Python 3.4:
python get-pip.py pip==19.1

The best option here is (if you can) to upgrade to a supported python version, see https://endoflife.date/python for the list of the currently supported python versions

pip3 not installing packages

I enter the following line into terminal:
pip3 install numpy
this gives me:
Traceback (most recent call last):
File "/usr/local/bin/pip3", line 9, in <module>
load_entry_point('pip==9.0.1', 'console_scripts', 'pip3')()
File "/usr/local/lib/python3.5/dist-packages/pip-9.0.1-py3.5.egg/pip/__init__.py", line 233, in main
return command.main(cmd_args)
File "/usr/local/lib/python3.5/dist-packages/pip-9.0.1-py3.5.egg/pip/basecommand.py", line 251, in main
timeout=min(5, options.timeout)) as session:
File "/usr/local/lib/python3.5/dist-packages/pip-9.0.1-py3.5.egg/pip/basecommand.py", line 72, in _build_session
insecure_hosts=options.trusted_hosts,
File "/usr/local/lib/python3.5/dist-packages/pip-9.0.1-py3.5.egg/pip/download.py", line 329, in __init__
self.headers["User-Agent"] = user_agent()
File "/usr/local/lib/python3.5/dist-packages/pip-9.0.1-py3.5.egg/pip/download.py", line 93, in user_agent
from pip._vendor import distro
File "/usr/local/lib/python3.5/dist-packages/pip-9.0.1-py3.5.egg/pip/_vendor/distro.py", line 1050, in <module>
_distro = LinuxDistribution()
File "/usr/local/lib/python3.5/dist-packages/pip-9.0.1-py3.5.egg/pip/_vendor/distro.py", line 594, in __init__
if include_lsb else {}
File "/usr/local/lib/python3.5/dist-packages/pip-9.0.1-py3.5.egg/pip/_vendor/distro.py", line 931, in _get_lsb_release_info
raise subprocess.CalledProcessError(code, cmd, stdout, stderr)
subprocess.CalledProcessError: Command 'lsb_release -a' returned non-zero exit status 1
Im thinking its a path issue but im not really sure.

This is a bug with the distro package vendored by pip. The bug has been solved but the latest version of pip uses and very old version of distro which doesn't have this bug fix applied.
For now, you can simply try to make the executable available in the path.

Unable to install any packages using easy_install [duplicate]

This question already has answers here:
Unable to install Flask-Mail
(2 answers)
Closed 6 years ago.
Whenever I run the command pip install Django I get the following error trace which means there is some version conflict. I tried uninstalling and then installing the same package, but it's throwing up the same error.
Downloading/unpacking bcrypt (from Django)
Downloading bcrypt-2.0.0.tar.gz
Running setup.py (path:/tmp/pip_build_root/bcrypt/setup.py) egg_info for package bcrypt
Traceback (most recent call last):
File "<string>", line 17, in <module>
File "/tmp/pip_build_root/bcrypt/setup.py", line 226, in <module>
**keywords_with_side_effects(sys.argv)
File "/usr/lib/python2.7/distutils/core.py", line 111, in setup
_setup_distribution = dist = klass(attrs)
File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/setuptools/dist.py", line 225, in __init__
_Distribution.__init__(self,attrs)
File "/usr/lib/python2.7/distutils/dist.py", line 287, in __init__
self.finalize_options()
File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/setuptools/dist.py", line 257, in finalize_options
ep.require(installer=self.fetch_build_egg)
File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/pkg_resources.py", line 2029, in require
working_set.resolve(self.dist.requires(self.extras),env,installer))
File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/pkg_resources.py", line 592, in resolve
raise VersionConflict(dist,req) # XXX put more info here
pkg_resources.VersionConflict: (certifi 2016.2.28 (/usr/local/lib/python2.7/dist-packages), Requirement.parse('certifi==2015.11.20'))
Complete output from command python setup.py egg_info:
Traceback (most recent call last):
File "<string>", line 17, in <module>
File "/tmp/pip_build_root/bcrypt/setup.py", line 226, in <module>
**keywords_with_side_effects(sys.argv)
File "/usr/lib/python2.7/distutils/core.py", line 111, in setup
_setup_distribution = dist = klass(attrs)
File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/setuptools/dist.py", line 225, in __init__
_Distribution.__init__(self,attrs)
File "/usr/lib/python2.7/distutils/dist.py", line 287, in __init__
self.finalize_options()
File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/setuptools/dist.py", line 257, in finalize_options
ep.require(installer=self.fetch_build_egg)
File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/pkg_resources.py", line 2029, in require
working_set.resolve(self.dist.requires(self.extras),env,installer))
File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/pkg_resources.py", line 592, in resolve
raise VersionConflict(dist,req) # XXX put more info here
pkg_resources.VersionConflict: (certifi 2016.2.28 (/usr/local/lib/python2.7/dist-packages), Requirement.parse('certifi==2015.11.20'))
----------------------------------------
Cleaning up...
I am using Python 2.7. Anybody knows what is the issue?

It seems like all the problem is because of certifi version conflict
so try downloading the source from here
https://pypi.python.org/pypi/certifi
and install from source
Extract it go into the folder and run this command
sudo python setup.py install
and it should work
peace

I met such a situation when I had already used system package manager like aptitude or pacman to install that very package, or dependency package
(they, pip and system package manager, do not know each other, while they install package at the same folder, some site-package thing, so it's easy to get a file already exist like problem)
You need to see which is conflict, open your python console, try to import it, and see where is it with module_name.file, remove it(or the folder) manually (please backup before problem really solved).
Or just use pip and system package manager to verify which has been already installed

Attribute Error Installing with pip

This is a head stumper so I am posting this question AFTER having examined and read all of the prior posts on this issue.
Running OSX 10.9 Python 2.7 no virtualenv
pip install awssh
Downloading/unpacking awssh
Downloading awssh-0.1.tar.gz
Cleaning up...
Exception:
Traceback (most recent call last):
File "/Library/Python/2.7/site-packages/pip-1.5.2-py2.7.egg/pip/basecommand.py",
line 122, in main
status = self.run(options, args)
File "/Library/Python/2.7/site-packages/pip-1.5.2-py2.7.egg/pip/commands/install.py",
line 274, in run
requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
File "/Library/Python/2.7/site-packages/pip-1.5.2-py2.7.egg/pip/req.py",
line 1215, in prepare_files
req_to_install.run_egg_info()
File "/Library/Python/2.7/site-packages/pip-1.5.2-py2.7.egg/pip/req.py",
line 288, in run_egg_info
logger.notify('Running setup.py (path:%s) egg_info for package %s' % (self.setup_py, self.name))
File "/Library/Python/2.7/site-packages/pip-1.5.2-py2.7.egg/pip/req.py",
line 265, in setup_py
import setuptools
File "/Library/Python/2.7/site-packages/setuptools/__init__.py", line 11, in <module>
from setuptools.extension import Extension
File "/Library/Python/2.7/site-packages/setuptools/extension.py", line 8, in <module>
File "/Library/Python/2.7/site-packages/setuptools/dist.py", line 21, in <module>
packaging = pkg_resources.packaging
AttributeError: 'module' object has no attribute 'packaging'

This error is caused by the presence of an outdated version of pkg_resources. In order to get rid of the error, do the following:
Start a python session, import pkg_resources, and view the file from which it is loaded:
In [1]: import pkg_resources
In [2]: pkg_resources.__file__
Out[2]: '/usr/lib/python2.7/dist-packages/pkg_resources.pyc'
Remove this file (and the associated *.py file):
$ sudo rm /usr/lib/python2.7/dist-packages/pkg_resources.py*
That's it! Re-run the installation; it should complete without any errors:
$ sudo pip install awssh
Warning
If you're on a Debian based Linux system, this file might have been installed via the python-pkg-resources package. Therefore updating or reinstalling this package will reinstate the stale module! Also be aware that you're messing with a file which is supposed to be controlled by apt.