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flake8.exceptions.FailedToLoadPlugin: Flake8 failed to load plugin "D" due to invalid syntax upon install

I installed flake8 and flake8 docstrings globally using this:
sudo pip install flake8 flake8-docstrings
I tried to launch flake8 but i am faced with this error:
flake8 --version
Traceback (most recent call last):
File "/usr/local/bin/flake8", line 11, in <module>
sys.exit(main())
File "/usr/local/lib/python2.7/dist-packages/flake8/main/cli.py", line 18, in main
app.run(argv)
File "/usr/local/lib/python2.7/dist-packages/flake8/main/application.py", line 393, in run
self._run(argv)
File "/usr/local/lib/python2.7/dist-packages/flake8/main/application.py", line 380, in _run
self.initialize(argv)
File "/usr/local/lib/python2.7/dist-packages/flake8/main/application.py", line 363, in initialize
self.find_plugins()
File "/usr/local/lib/python2.7/dist-packages/flake8/main/application.py", line 199, in find_plugins
self.check_plugins.load_plugins()
File "/usr/local/lib/python2.7/dist-packages/flake8/plugins/manager.py", line 410, in load_plugins
plugins = list(self.manager.map(load_plugin))
File "/usr/local/lib/python2.7/dist-packages/flake8/plugins/manager.py", line 297, in map
yield func(self.plugins[name], *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/flake8/plugins/manager.py", line 408, in load_plugin
return plugin.load_plugin()
File "/usr/local/lib/python2.7/dist-packages/flake8/plugins/manager.py", line 165, in load_plugin
raise failed_to_load
flake8.exceptions.FailedToLoadPlugin: Flake8 failed to load plugin "D" due to invalid syntax (checker.py, line 668).

I fixed it by downgrading pydocstyle to 3.0.0.
pip install pydocstyle=3.0.0

Unable to install gdal in python 3.6.1 in macos Sierra

I was trying to install gdal in python 3.6.1, but getting the following error. How to overcome this?
bibinwilson ~ $ pip3 install gdal
Collecting gdal Downloading GDAL-2.2.1.tar.gz (475kB)
100% |████████████████████████████████| 481kB 397kB/s
Complete output from command python setup.py egg_info:
running egg_info
creating pip-egg-info/GDAL.egg-info
writing pip-egg-info/GDAL.egg-info/PKG-INFO
writing dependency_links to pip-egg-info/GDAL.egg-info/dependency_links.txt
writing top-level names to pip-egg-info/GDAL.egg-info/top_level.txt
writing manifest file 'pip-egg-info/GDAL.egg-info/SOURCES.txt'
warning: manifest_maker: standard file '-c' not found
Traceback (most recent call last):
File "/private/var/folders/43/7yqv__4j5776m508kggs_dxm0000gn/T/pip-build-naebgem9/gdal/setup.py",
line 131, in fetch_config
p = subprocess.Popen([command, args], stdout=subprocess.PIPE)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py",
line 707, in __init__
restore_signals, start_new_session)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py",
line 1326, in _execute_child
raise child_exception_type(errno_num, err_msg)
FileNotFoundError: [Errno 2] No such file or directory: '../../apps/gdal-config'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/private/var/folders/43/7yqv__4j5776m508kggs_dxm0000gn/T/pip-build-naebgem9/gdal/setup.py",
line 179, in get_gdal_config
return fetch_config(option, gdal_config = self.gdal_config)
File "/private/var/folders/43/7yqv__4j5776m508kggs_dxm0000gn/T/pip-build-naebgem9/gdal/setup.py",
line 135, in fetch_config
raise gdal_config_error(e)
__main__.gdal_config_error: [Errno 2] No such file or directory: '../../apps/gdal-config'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/private/var/folders/43/7yqv__4j5776m508kggs_dxm0000gn/T/pip-build-naebgem9/gdal/setup.py",
line 131, in fetch_config
p = subprocess.Popen([command, args], stdout=subprocess.PIPE)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py",
line 707, in __init__
restore_signals, start_new_session)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py",
line 1326, in _execute_child
raise child_exception_type(errno_num, err_msg)
FileNotFoundError: [Errno 2] No such file or directory: 'gdal-config'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/private/var/folders/43/7yqv__4j5776m508kggs_dxm0000gn/T/pip-build-naebgem9/gdal/setup.py",
line 339, in <module>
**extra )
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/distutils/core.py",
line 148, in setup
dist.run_commands()
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/distutils/dist.py",
line 955, in run_commands
self.run_command(cmd)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/distutils/dist.py",
line 974, in run_command
cmd_obj.run()
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/setuptools/command/egg_info.py",
line 279, in run
self.find_sources()
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/setuptools/command/egg_info.py",
line 306, in find_sources
mm.run()
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/setuptools/command/egg_info.py",
line 533, in run
self.add_defaults()
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/setuptools/command/egg_info.py",
line 562, in add_defaults
sdist.add_defaults(self)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/setuptools/command/py36compat.py",
line 36, in add_defaults
self._add_defaults_ext()
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/setuptools/command/py36compat.py",
line 119, in _add_defaults_ext
build_ext = self.get_finalized_command('build_ext')
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/distutils/cmd.py",
line 299, in get_finalized_command
cmd_obj.ensure_finalized()
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/distutils/cmd.py",
line 107, in ensure_finalized
self.finalize_options()
File "/private/var/folders/43/7yqv__4j5776m508kggs_dxm0000gn/T/pip-build-naebgem9/gdal/setup.py",
line 214, in finalize_options
self.gdaldir = self.get_gdal_config('prefix')
File "/private/var/folders/43/7yqv__4j5776m508kggs_dxm0000gn/T/pip-build-naebgem9/gdal/setup.py",
line 188, in get_gdal_config
return fetch_config(option)
File "/private/var/folders/43/7yqv__4j5776m508kggs_dxm0000gn/T/pip-build-naebgem9/gdal/setup.py",
line 135, in fetch_config
raise gdal_config_error(e)
__main__.gdal_config_error: [Errno 2] No such file or directory: 'gdal-config'
---------------------------------------- Command "python setup.py egg_info" failed with error code 1 in
/private/var/folders/43/7yqv__4j5776m508kggs_dxm0000gn/T/pip-build-naebgem9/gdal/

I had this error and installing GDAL through Homebrew fixed this for me. Installing the the binaries for GDAL didn't correct the error but once I installed through brew it was resolved.
brew install gdal
seems like the same issue as here: Python GDAL: pip install --no-install GDAL fails
If you've already installed the binaries (like I had) then this answer worked for me: https://stackoverflow.com/a/44051123/3969685

This simple procedure seemed to work for me on MAC sierra, python 3.6, GDAL 2.2.3
1) Install GDAL framework using dmg installer for MAC [GDAL MAC
Frameworks]: http://www.kyngchaos.com/software/frameworks
2) Add gdal-config folder to your path and get your version:
$ export PATH=/Library/Frameworks/GDAL.framework/Versions/2.2/Programs:$PATH
$ gdal-config --version
3) Use pip to install the version reported by gdal-config --version:
$ pip install gdal==2.2.3
Step 1 Seems to set up the python site-packages under its install framework folders and I think you could copy them to your python site-packages. But better to use pip install.

This simple procedure seemed to work for me on MAC
Install GDAL framework using Brew
> brew install gdal
gdal-config --version
gdal-config --version
2.4.4
3. GDAL Python binding
pip3 install gdal==2.4.4
Note the GDAL version of the end of the command, it must be the same as the obtained in the step above using gdal-config. To avoid conflicts or any further issues, it’s important to install and use the exact versions that any component will require.

QGIS python module is interfering with another python module installed at the system level

I am working with QGIS Pisa in Windows environment.I wanted to upgrade the scipy module of Python present inside OSGeo4W. For that I installed pip from the OSGeo4W windows command shell. I closed the command shell after installation and reopened it.
When I give the pip command inside OSFGeo4W windows command shell, it is referring to pip module installed at the system level and hence I am getting an error. I don't know how to correct this thing. Here is my error stack trace:
Traceback (most recent call last):
File "C:\Program Files (x86)\QGIS Pisa\apps\Python27\lib\runpy.py", line 162, in _run_module_as_main "__main__", fname, loader, pkg_name)
File "C:\Program Files (x86)\QGIS Pisa\apps\Python27\lib\runpy.py", line 72, in _run_code exec code in run_globals
File "C:\Python27_32Bit\Scripts\pip.exe\__main__.py", line 5, in <module>
File "C:\Program Files (x86)\QGIS Pisa\apps\Python27\lib\site-packages\pip\__init__.py", line 13, in <module>
from pip.utils import get_installed_distributions, get_prog
File "C:\Program Files (x86)\QGIS Pisa\apps\Python27\lib\site-packages\pip\utils\__init__.py", line 26, in <module>
from pip._vendor import pkg_resources
File "C:\Program Files (x86)\QGIS Pisa\apps\Python27\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 76, in <module>
__import__('pip._vendor.packaging.specifiers')
File "C:\Program Files (x86)\QGIS Pisa\apps\Python27\lib\site-packages\pip\_vendor\packaging\specifiers.py", line 275, in <module>
class Specifier(_IndividualSpecifier):
File "C:\Program Files (x86)\QGIS Pisa\apps\Python27\lib\site-packages\pip\_vendor\packaging\specifiers.py", line 374, in Specifier
re.VERBOSE | re.IGNORECASE,
File "C:\Program Files (x86)\QGIS Pisa\apps\Python27\lib\re.py", line 190, in compile return _compile(pattern, flags)
File "C:\Program Files (x86)\QGIS Pisa\apps\Python27\lib\re.py", line 242, in _compile raise error, v # invalid expression
sre_constants.error: nothing to repeat
As you can see on the stacktrace, 3rd line from top, the code refers to pip module of python installed at the system level instead of pip module installed inside the QGIS Pisa. How can I correctly run this ?

virtualenvwrapper install failure - "what would cause ImportError: No module named core" etc?

I'm on osx 10.6.8, and trying to use bash to install virtualenvwrapper, and am getting back cryptic feedback (at least for me).
I was able to install virtualenv.
Perhaps someone can point me in the right direction...
the output from the failed install:
Downloading/unpacking virtualenvwrapper
Running setup.py egg_info for package virtualenvwrapper
Installed /private/tmp/pip_build_root/virtualenvwrapper/pbr-0.5.23-py2.6.egg
/System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/setuptools/dist.py:245: UserWarning: Module pbr was already imported from /tmp/easy_install-xuBV6G/pbr-0.5.23/pbr/__init__.py, but /private/tmp/pip_build_root/virtualenvwrapper/pbr-0.5.23-py2.6.egg is being added to sys.path
working_set.add(dist)
Traceback (most recent call last):
File "<string>", line 16, in <module>
File "/private/tmp/pip_build_root/virtualenvwrapper/setup.py", line 7, in <module>
pbr=True,
File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/distutils/core.py", line 113, in setup
_setup_distribution = dist = klass(attrs)
File "/System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/setuptools/dist.py", line 223, in __init__
_Distribution.__init__(self,attrs)
File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/distutils/dist.py", line 270, in __init__
self.finalize_options()
File "/System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/setuptools/dist.py", line 256, in finalize_options
ep.load()(self, ep.name, value)
File "/System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/pkg_resources.py", line 1907, in load
entry = __import__(self.module_name, globals(),globals(), ['__name__'])
ImportError: No module named core
Complete output from command python setup.py egg_info:
Installed /private/tmp/pip_build_root/virtualenvwrapper/pbr-0.5.23-py2.6.egg
/System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/setuptools/dist.py:245: UserWarning: Module pbr was already imported from /tmp/easy_install-xuBV6G/pbr-0.5.23/pbr/init.py, but /private/tmp/pip_build_root/virtualenvwrapper/pbr-0.5.23-py2.6.egg is being added to sys.path
working_set.add(dist)
Traceback (most recent call last):
File "", line 16, in
File "/private/tmp/pip_build_root/virtualenvwrapper/setup.py", line 7, in
pbr=True,
File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/distutils/core.py", line 113, in setup
_setup_distribution = dist = klass(attrs)
File "/System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/setuptools/dist.py", line 223, in init
_Distribution.__init__(self,attrs)
File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/distutils/dist.py", line 270, in init
self.finalize_options()
File "/System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/setuptools/dist.py", line 256, in finalize_options
ep.load()(self, ep.name, value)
File "/System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/pkg_resources.py", line 1907, in load
entry = __import__(self.module_name, globals(),globals(), ['__name__'])
ImportError: No module named core
Cleaning up...
Command python setup.py egg_info failed with error code 1 in /private/tmp/pip_build_root/virtualenvwrapper
Storing complete log in /Users/admin/Library/Logs/pip.log

Updating pbr package using pip install -U pbr globally solved the import issue.

Setting up GDAL via buildout on Ubuntu 10.04

I'm trying to install GDAL-1.9.0 under Ubuntu 10.04 via buildout and unfortunately get a very strange error.
python setup.py build
'import site' failed; use -v for traceback
Traceback (most recent call last):
File "setup.py", line 75, in <module>
from distutils.command.build_ext import build_ext
File "/usr/lib/python2.6/distutils/command/build_ext.py", line 13, in <module>
from site import USER_BASE, USER_SITE
File "/home/student/geoserv_new/geoportal2/trunk/parts/buildout/site.py", line 601, in <module>
main()
File "/home/student/geoserv_new/geoportal2/trunk/parts/buildout/site.py", line 583, in main
known_paths = addusersitepackages(known_paths)
File "/home/student/geoserv_new/geoportal2/trunk/parts/buildout/site.py", line 271, in addusersitepackages
user_site = getusersitepackages()
File "/home/student/geoserv_new/geoportal2/trunk/parts/buildout/site.py", line 246, in getusersitepackages
user_base = getuserbase() # this will also set USER_BASE
File "/home/student/geoserv_new/geoportal2/trunk/parts/buildout/site.py", line 235, in getuserbase
from sysconfig import get_config_var
ImportError: No module named sysconfig
make[2]: *** [build] Error 1
make[2]: Leaving directory `/tmp/tmpY7oYvSbuildout-gdal/gdal-1.9.0/swig/python'
make[1]: *** [build] Error 2
make[1]: Leaving directory `/tmp/tmpY7oYvSbuildout-gdal/gdal-1.9.0/swig'
make: *** [swig-modules] Error 2
gdal: cmmi failed: /tmp/tmpY7oYvSbuildout-gdal
While:
Installing gdal.
An internal error occurred due to a bug in either zc.buildout or in a
recipe being used:
Traceback (most recent call last):
File "/home/student/geoserv_new/geoportal2/trunk/eggs/zc.buildout-1.5.2-py2.7.egg/zc/buildout/buildout.py", line 1805, in main
getattr(buildout, command)(args)
File "/home/student/geoserv_new/geoportal2/trunk/eggs/zc.buildout-1.5.2-py2.7.egg/zc/buildout/buildout.py", line 584, in install
installed_files = self[part]._call(recipe.install)
File "/home/student/geoserv_new/geoportal2/trunk/eggs/zc.buildout-1.5.2-py2.7.egg/zc/buildout/buildout.py", line 1297, in _call
return f()
File "/home/student/geoserv_new/geoportal2/trunk/eggs/zc.recipe.cmmi-1.3.5-py2.7.egg/zc/recipe/cmmi/__init__.py", line 113, in install
self.build()
File "/home/student/geoserv_new/geoportal2/trunk/eggs/zc.recipe.cmmi-1.3.5-py2.7.egg/zc/recipe/cmmi/__init__.py", line 196, in build
self.cmmi(dest)
File "/home/student/geoserv_new/geoportal2/trunk/eggs/zc.recipe.cmmi-1.3.5-py2.7.egg/zc/recipe/cmmi/__init__.py", line 222, in cmmi
system("make")
File "/home/student/geoserv_new/geoportal2/trunk/eggs/zc.recipe.cmmi-1.3.5-py2.7.egg/zc/recipe/cmmi/__init__.py", line 34, in system
raise SystemError("Failed", c)
SystemError: ('Failed', 'make')
Here is my buildout.cfg part of gdal:
[gdal]
recipe = zc.recipe.cmmi
url = http://download.osgeo.org/gdal/gdal-1.9.0.tar.gz
extra_options =
--with-python
--with-geos=${geos:location}/bin/geos-config
Even more strange that when I'm going to python2.7 shell and try import sysconfig. Everything is working fine. Any suggestion about this?
Thanks,
Sergey

You mention that you tested it in the 'python2.7' shell.
This:
File "/usr/lib/python2.6/distutils/command/build_ext.py",
Implies that buildout is running in python 2.6.
Is sysconfig available in your python2.6 environment, or are you running buildout under the wrong version?