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pip throws TypeError: parse() got an unexpected keyword argument 'transport_encoding' when trying to install new packages

I am using the latest version of Anaconda3. I just installed it and I am trying to download some packages. I am using the Anaconda Prompt. While trying to use pip to do anything (including upgrading existing packages) I get the following traceback.
Exception:
Traceback (most recent call last):
File "C:\Users\csprock\Anaconda3\lib\site-packages\pip\basecommand.py", line 215, in main
status = self.run(options, args)
File "C:\Users\csprock\Anaconda3\lib\site-packages\pip\commands\install.py", line 335, in run
wb.build(autobuilding=True)
File "C:\Users\csprock\Anaconda3\lib\site-packages\pip\wheel.py", line 749, in build
self.requirement_set.prepare_files(self.finder)
File "C:\Users\csprock\Anaconda3\lib\site-packages\pip\req\req_set.py", line 380, in prepare_files
ignore_dependencies=self.ignore_dependencies))
File "C:\Users\csprock\Anaconda3\lib\site-packages\pip\req\req_set.py", line 487, in _prepare_file
req_to_install, finder)
File "C:\Users\csprock\Anaconda3\lib\site-packages\pip\req\req_set.py", line 428, in _check_skip_installed
req_to_install, upgrade_allowed)
File "C:\Users\csprock\Anaconda3\lib\site-packages\pip\index.py", line 465, in find_requirement
all_candidates = self.find_all_candidates(req.name)
File "C:\Users\csprock\Anaconda3\lib\site-packages\pip\index.py", line 423, in find_all_candidates
for page in self._get_pages(url_locations, project_name):
File "C:\Users\csprock\Anaconda3\lib\site-packages\pip\index.py", line 568, in _get_pages
page = self._get_page(location)
File "C:\Users\csprock\Anaconda3\lib\site-packages\pip\index.py", line 683, in _get_page
return HTMLPage.get_page(link, session=self.session)
File "C:\Users\csprock\Anaconda3\lib\site-packages\pip\index.py", line 811, in get_page
inst = cls(resp.content, resp.url, resp.headers)
File "C:\Users\csprock\Anaconda3\lib\site-packages\pip\index.py", line 731, in __init__
namespaceHTMLElements=False,
TypeError: parse() got an unexpected keyword argument 'transport_encoding'
Any ideas? (this problem only started after I installed tensorflow) Thanks.

I had the same problem and what worked for me was updating pip with conda:
conda install pip
It changed my pip from 9.0.1-py36hadba87b_3 to 9.0.1-py36h226ae91_4 and solved issue.

download https://github.com/html5lib/html5lib-python/tree/master/html5lib and overwrite all the files within html5lib folder in your tensorflow environment
"envs\tensorflow\Lib\site-packages\html5lib"
Then you should be able to run any "pip install" commands after that

I ran into the same problem while installing keras (after I installed tensorflow 1.3 using pip) on the latest version of Anaconda 3. I was able to fix the problem by installing keras using conda conda install -c conda-forge keras

I was getting this exact error installing SerpentAI. All I did to fix it was run activate serpent in conda prompt and then I ran the command again. Not sure if it's applicable to your situation, but they seem close enough that it might.
EDIT - if the above didn't work, comment out this line:
That worked perfectly for me.
(this took a helpful member of our community 8 hours to debug)

This worked for me:
python -m pip install --upgrade tensorflow

pip3 install -U html5lib=="0.9999999"
worked for me
here's the html5lib bug on github
from: https://stackoverflow.com/a/39087283

Here was the fix for me:
cd /usr/share/python-wheels/
Contents of dir:
-rwxrwxrwx 1 www-data www-data 493905 Jul 22 2015 html5lib-0.999-py2.py3-none-any.whl
-rw-r--r-- 1 root root 112620 Apr 3 2019 html5lib-0.999999999-py2.py3-none-any.whl
Run:
mv html5lib-0.999-py2.py3-none-any.whl html5lib-0.999-py2.py3-none-any.whl.bak
pip3 works fine after. Was loading the old 0.999 version.

pip install permission error

I just recently re-installed Python 2 and Python 3 via homebrew and everything looked ok. However I updated pip3 as well as pip after installing python and then, when trying to install virtualenv, I get the below errors:
~> pip install virtualenv Collecting virtualenv Downloading virtualenv-13.1.2-py2.py3-none-any.whl (1.7MB) 100% |
████████████████████████████████| 1.7MB 361kB/s Installing collected
packages: virtualenv Exception: Traceback (most recent call last):
File "/usr/local/lib/python3.4/site-packages/pip/basecommand.py", line 211, in main status = self.run(options, args)
File "/usr/local/lib/python3.4/site-packages/pip/commands/install.py", line 311, in run root=options.root_path, File "/usr/local/lib/python3.4/site-packages/pip/req/req_set.py", line 646, in install **kwargs
File "/usr/local/lib/python3.4/site-packages/pip/req/req_install.py", line 803, in install self.move_wheel_files(self.source_dir, root=root)
File "/usr/local/lib/python3.4/site-packages/pip/req/req_install.py", line 998, in move_wheel_files isolated=self.isolated, File "/usr/local/lib/python3.4/site-packages/pip/wheel.py", line 479, in move_wheel_files maker.make_multiple(['%s = %s' % kv for kv in console.items()]) File "/usr/local/lib/python3.4/site-packages/pip/_vendor/distlib/scripts.py", line 364, in make_multiple filenames.extend(self.make(specification, options))
File "/usr/local/lib/python3.4/site-packages/pip/_vendor/distlib/scripts.py", line 353, in make self._make_script(entry, filenames, options=options)
File "/usr/local/lib/python3.4/site-packages/pip/_vendor/distlib/scripts.py", line 257, in _make_script self._write_script(scriptnames, shebang, script, filenames, ext) File "/usr/local/lib/python3.4/site-packages/pip/_vendor/distlib/scripts.py", line 231, in _write_script self._fileop.write_binary_file(outname, script_bytes)
File "/usr/local/lib/python3.4/site-packages/pip/_vendor/distlib/util.py", line 388, in write_binary_file with open(path, 'wb') as f:
PermissionError: [Errno 13] Permission denied: '/usr/local/bin/virtualenv'
pip freeze then seems to think virtualenv is installed but none of it's commands work.
Interestingly if I try to uninstall virtualenv it seems to have it attached to the Python 3 installed by brew installed of the Python 2 version brew installed.
Uninstalling virtualenv-13.1.2:
/usr/local/lib/python3.4/site-packages/__pycache__/virtualenv.cpython-34.pyc
/usr/local/lib/python3.4/site-packages/virtualenv-13.1.2.dist-info/DESCRIPTION.rst
/usr/local/lib/python3.4/site-packages/virtualenv-13.1.2.dist-info/METADATA
/usr/local/lib/python3.4/site-packages/virtualenv-13.1.2.dist-info/RECORD
/usr/local/lib/python3.4/site-packages/virtualenv-13.1.2.dist-info/WHEEL
/usr/local/lib/python3.4/site-packages/virtualenv-13.1.2.dist-info/entry_points.txt
/usr/local/lib/python3.4/site-packages/virtualenv-13.1.2.dist-info/metadata.json
/usr/local/lib/python3.4/site-packages/virtualenv-13.1.2.dist-info/pbr.json
/usr/local/lib/python3.4/site-packages/virtualenv-13.1.2.dist-info/top_level.txt
/usr/local/lib/python3.4/site-packages/virtualenv.py
/usr/local/lib/python3.4/site-packages/virtualenv_support/__init__.py
/usr/local/lib/python3.4/site-packages/virtualenv_support/__pycache__/__init__.cpython-34.pyc
/usr/local/lib/python3.4/site-packages/virtualenv_support/argparse-1.3.0-py2.py3-none-any.whl
/usr/local/lib/python3.4/site-packages/virtualenv_support/pip-7.1.2-py2.py3-none-any.whl
/usr/local/lib/python3.4/site-packages/virtualenv_support/setuptools-18.2-py2.py3-none-any.whl
/usr/local/lib/python3.4/site-packages/virtualenv_support/wheel-0.24.0-py2.py3-none-any.whl
Proceed (y/n)?
pip freeze gives me:
~> pip freeze
pbr==1.6.0
virtualenv==13.1.2
virtualenv-clone==0.2.6
wheel==0.24.0
so virtualenv already installed but doesn't work for some reason.

For python 2.7 I believe pip is referenced by pip2. Your permission error is easily fixed by running the command as sudo.

trouble with pip and easy_install to install python packages

I am going to install numpy library as a *.whl file, as numpy-1.9.2rc1+mkl- cp27-none-win32, on my Windows 7 machine...
Here is my approaches to do that, are which pip and easy_install packages...
The odd thing is that both don't work in the case of either Python 3.4 or Python 2.7...
Here are the trace of the attempts in the command prompt:
pip:
"C:\Users\Matinking\Desktop\numpy- 1.9.2rc1+
mkl-cp27-none-win32.whl" f
Exception:
Traceback (most recent call last):
File "c:\python34\lib\site-packages\pip\basecommand.py", line 122, in main
status = self.run(options, args)
File "c:\python34\lib\site-packages\pip\commands\install.py", line 257, in r
InstallRequirement.from_line(name, None))
File "c:\python34\lib\site-packages\pip\req.py", line 172, in from_line
return cls(req, comes_from, url=url, prereleases=prereleases)
File "c:\python34\lib\site-packages\pip\req.py", line 70, in __init__
req = pkg_resources.Requirement.parse(req)
File "c:\python34\lib\site-packages\pip\_vendor\pkg_resources.py", line 2667
in parse
reqs = list(parse_requirements(s))
File "c:\python34\lib\site-packages\pip\_vendor\pkg_resources.py", line 2605
in parse_requirements
line, p, specs = scan_list(VERSION,LINE_END,line,p,(1,2),"version spec")
File "c:\python34\lib\site-packages\pip\_vendor\pkg_resources.py", line 2573
in scan_list
raise ValueError("Expected "+item_name+" in",line,"at",line[p:])
ValueError: ('Expected version spec in', ' C:\\Users\\Matinking\\Desktop\\numer
performance.pdf', 'at', ':\\Users\\Matinking\\Desktop\\numericperformance.pdf'
Storing debug log for failure in C:\Users\Matinking\pip\pip.log
and easy_install:
C:\Python34\Scripts>easy_install.exe "C:\Users\Matinking\Desktop\numpy- 1.9.2rc1+
mkl-cp27-none-win32.whl"
Processing numpy-1.9.2rc1+mkl-cp27-none-win32.whl
Writing C:\Users\MATINK~1\AppData\Local\Temp\easy_install- jr2ijafr\numpy\setup.c
fg
Running numpy\setup.py -q bdist_egg --dist-dir C:\Users\MATINK~1\AppData\Local\T
emp\easy_install-jr2ijafr\numpy\egg-dist-tmp-umy5kseg
This is the wrong setup.py file to run
No eggs found in C:\Users\MATINK~1\AppData\Local\Temp\easy_install-jr2ijafr\nump
y\egg-dist-tmp-umy5kseg (setup script problem?)
Any idea for the problem?!

You should upgrade your pip to version 6.0, the .whl file you're using isn't compatible with earlier versions.
To bump up your pip version on Windows :
python -m pip install -U pip

pip error -> why were you running an install on a pdf? That was never going to work.
easy_install error -> looks like you downloaded a python 2.7 binary and tried to install into a python 3.4 installation.
For scientific stack python, you are hard pressed to beat an Anaconda python distribution.

Virtualenv venv fails with the following error

I'm new to Python development and I'm trying to instal virtualenv in my project directory.
However I have the following error:
Installing collected packages: pip, setuptools
Exception:
Traceback (most recent call last):
File "/Library/Python/2.7/site-packages/virtualenv_support/pip-6.0.8-py2.py3-none-any.whl/pip/basecommand.py", line 232, in main
status = self.run(options, args)
File "/Library/Python/2.7/site-packages/virtualenv_support/pip-6.0.8-py2.py3-none-any.whl/pip/commands/install.py", line 347, in run
root=options.root_path,
File "/Library/Python/2.7/site-packages/virtualenv_support/pip-6.0.8-py2.py3-none-any.whl/pip/req/req_set.py", line 549, in install
**kwargs
File "/Library/Python/2.7/site-packages/virtualenv_support/pip-6.0.8-py2.py3-none-any.whl/pip/req/req_install.py", line 754, in install
self.move_wheel_files(self.source_dir, root=root)
File "/Library/Python/2.7/site-packages/virtualenv_support/pip-6.0.8-py2.py3-none-any.whl/pip/req/req_install.py", line 963, in move_wheel_files
isolated=self.isolated,
File "/Library/Python/2.7/site-packages/virtualenv_support/pip-6.0.8-py2.py3-none-any.whl/pip/wheel.py", line 234, in move_wheel_files
clobber(source, lib_dir, True)
File "/Library/Python/2.7/site-packages/virtualenv_support/pip-6.0.8-py2.py3-none-any.whl/pip/wheel.py", line 212, in clobber
shutil.copyfile(srcfile, destfile)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 82, in copyfile
with open(dst, 'wb') as fdst:
IOError: [Errno 13] Permission denied: '/Library/Python/2.7/site-packages/pip/__init__.py'
----------------------------------------
...Installing setuptools, pip...done.
Traceback (most recent call last):
File "/usr/local/bin/virtualenv", line 11, in <module>
sys.exit(main())
File "/Library/Python/2.7/site-packages/virtualenv.py", line 825, in main
symlink=options.symlink)
File "/Library/Python/2.7/site-packages/virtualenv.py", line 993, in create_environment
install_wheel(to_install, py_executable, search_dirs)
File "/Library/Python/2.7/site-packages/virtualenv.py", line 961, in install_wheel
'PIP_NO_INDEX': '1'
File "/Library/Python/2.7/site-packages/virtualenv.py", line 903, in call_subprocess
% (cmd_desc, proc.returncode))
OSError: Command /Users/alexandrurada...oard/venv/bin/python -c "import sys, pip; sys...d\"] + sys.argv[1:]))" setuptools pip failed with error code 2
I installed pip with
easy_install pip
Then I installed virtualenv with
pip install virtualenv
Without any errors. However I'm still getting this. I didn't want to try it with sudo. Should I?
UPDATE: I installed them with sudo, and I got rid of this error. However another one when trying to install something with pip:
air:dashboard alexandrurada$ pip install flask
-bash: /usr/local/bin/pip: "path_here": bad interpreter: No such file or directory
UPDATE 2: The earlier error was because of a space inside a directory name. Looks like path doesn't work with such names.
Anyway, the error I'm getting now is
File "/usr/local/bin/pip", line 7, in <module>
from pip import main
ImportError: No module named pip
I checked my /usr/local/bin/pip and the file exists.

You need sudo pip install virtualenv to install virtualenv globally. When setting up your virtualenvs make sure you don't use sudo and that you activate your virtualenv before trying to install.
[Errno 13] Permission denied: means you don't have write permissions.

Install a newer version of pip and avoid using easy_install.
Download pip from: https://bootstrap.pypa.io/get-pip.py
and then run Python on it:
$ python get-pip.py
If you want to install pip to the global path, you likely want to run that last command with sudo. Without using sudo, pip will get installed for use with whatever Python interpreter is in your path.
From here, you can install virtualenv with pip:
$ pip install virtualenv
From your responses, it seems like you'd be best served by getting your system in a known state: Download that file, then run sudo python get-pip.py so you're running with a known-working pip install.

Virtualenv returning a 'No such file or directory...' error

The command virtualenv --no-site-packages env/ produces the following error stack trace:
The --no-site-packages flag is deprecated; it is now the default behavior.
New python executable in env/bin/python
Installing setuptools.............done.
Installing pip...
Error [Errno 2] No such file or directory while executing command /home/zach/School/CS...env/bin/easy_install /usr/local/lib/pytho...pport/pip-1.1.tar.gz
...Installing pip...done.
Traceback (most recent call last):
File "/usr/local/bin/virtualenv", line 9, in <module>
load_entry_point('virtualenv==1.7.1.2', 'console_scripts', 'virtualenv')()
File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 928, in main
never_download=options.never_download)
File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 1042, in create_environment
install_pip(py_executable, search_dirs=search_dirs, never_download=never_download)
File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 640, in install_pip
filter_stdout=_filter_setup)
File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 966, in call_subprocess
cwd=cwd, env=env)
File "/usr/lib/python2.7/subprocess.py", line 679, in __init__
errread, errwrite)
File "/usr/lib/python2.7/subprocess.py", line 1239, in _execute_child
raise child_exception
OSError: [Errno 2] No such file or directory
I am using Ubuntu 11.10 and Python 2.7.
EDIT:
Figured it out.
I originally installed it with pip, so I uninstalled via pip and that reinstalled via apt-get.

I had the same on debian. Upgrade python-virtualenv resolves the problem.
apt-get upgrade python-virtualenv

virtualenv looks to be trying to install pip using easy_install from a local archive. Can you verify that it exists at /usr/local/lib/pytho...pport/pip-1.1.tar.gz ?
You may want to ensure that you have pip properly install beforehand. Try: easy_install -U pip first.

In mac run pip install virtualenv virtualenvwrapper to install virtualenv.

You should make sure the path to easy_install does not have spaces in it: /home/zach/School/CS...env/bin/easy_install

If you are Debian user, then this command should resolve the problem:
sudo apt-get upgrade python-virtualenv