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Kivy install failed with pip Mac OS Sierra

I get the following error message:
*bytes, CFIndex length, CFAllocatorRef bytesDeallocator);
^~~~~~~~~~~~~~~~~~~~~~~~~~~
error: command 'gcc' failed with exit status 1
I used this command:
"//anaconda/bin/python -u -c "import setuptools,
tokenize;file='/private/var/folders/sg/p9ztjwgx1v1cctrr2hmdymcr0000gp/T/pip-build-y_mai_3m/kivy/setup.py';f=getattr(tokenize,
'open', open)(file);code=f.read().replace('\r\n',
'\n');f.close();exec(compile(code, file, 'exec'))" install
--record /var/folders/sg/p9ztjwgx1v1cctrr2hmdymcr0000gp/T/pip-_3c7ty_r-record/install-record.txt
--single-version-externally-managed --compile" failed with error code 1 in
/private/var/folders/sg/p9ztjwgx1v1cctrr2hmdymcr0000gp/T/pip-build-y_mai_3m/kivy/
What could be the reason, how to solve this problem?

I figured it out, as Cython was located inside anaconda pip couldn't install kivy, and used pip3 to install Cython and so kivy, now it is installed :) thanks people

Linux : unable to install kivy in virtual environment

I am using python2.7 and created a virtual environment 'kivyenv'.
First i install Cython and then kivy in kivyenv.
pip install Cython
pip install kivy
kivy failed to install giving some error :-
In file included from /tmp/pip-build-4T9oG4/kivy/kivy/graphics/opengl.c:274:0:
/tmp/pip-build-4T9oG4/kivy/kivy/graphics/gl_redirect.h:43:22: fatal error: GL/gl.h: No such file or directory
# include <GL/gl.h>
^
compilation terminated.
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
----------------------------------------
Command "/root/kivyenv/bin/python2.7 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-4T9oG4/kivy/setup.py';
exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))"
install --record /tmp/pip-3__DxE-record/install-record.txt --single-version-externally-managed --compile --install-headers
/root/kivyenv/include/site/python2.7/kivy" failed with error code 1 in /tmp/pip-build-4T9oG4/kivy/
I am using Ubuntu 16.

This is happening because you do not have dependency libraries installed on your system, specifically the ones for OpenGL - most likely you do not have mesa packages installed.
Follow the instructions for your specific distribution on how to install all of the needed dependencies at: https://kivy.org/docs/installation/installation-linux.html#using-software-packages

had the same problem. the following worked for me:
pip(3) install Cython==0.26
pip(3) install kivy
hope it helps

Error while installing scrapy on mac OSX 10.11.1

I am new to scrapy and i tried installing scrapy on mac using this command
sudo pip install scrapy
and i got this error:
Command "/usr/local/opt/python/bin/python2.7 -c "import setuptools,
tokenize;file='/private/tmp/pip-build-lpJzV8/lxml/setup.py';exec(compile(getattr(tokenize,
'open', open)(file).read().replace('\r\n', '\n'), file,
'exec'))" install --record /tmp/pip-H3llSf-record/install-record.txt
--single-version-externally-managed --compile" failed with error code 1 in /private/tmp/pip-build-lpJzV8/lxml
Can someone help?

Dont know if you have command line tools installed as #birryree suggested. If not, you could fire up the terminal (type terminal in spotlight) and type xcode-select --install. Then run pip again. By the way, I tried installing just now and it installs fine.

Error installing PyObjc: command '/usr/bin/clang' failed

I've been working on a python script, first using the Psychopy compiler, which already included all I needed, but now I need to make it the more independent as possible. I have the script working on a Windows computer, but I also want it to work in OSX.
The script uses pyglet and I followed this post in order to install it. However, when I reach the latest step, which is installing PyObjc, I have the following error:
40 warnings and 1 error generated.
error: command '/usr/bin/clang' failed with exit status 1
----------------------------------------
Cleaning up...
Command /Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python -c "import setuptools, tokenize;__file__='/private/var/folders/fk/1plt8wj53_d183pv59scmg4m0000gn/T/pip_build_JL/pyobjc-core/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/fk/1plt8wj53_d183pv59scmg4m0000gn/T/pip-HfEjaW-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /private/var/folders/fk/1plt8wj53_d183pv59scmg4m0000gn/T/pip_build_JL/pyobjc-core
Storing debug log for failure in /Users/JL/.pip/pip.log
Why does this error appears? What can I do to solve it?

Terminal post：
xcode-select --install
may be can help you.

Try installing pyobjc separately first.
On OSX 10.7 or 10.8, try:
env CC=clang pip -U pyobjc-core
env CC=clang pip -U pyobjc
On OSX 10.9, try:
ARCHFLAGS=-Wno-error=unused-command-line-argument-hard-error-in-future pip install pyobjc

Cannot import python-goose (OSX 10.9)

I am trying to properly set up python-goose in a virtualenv.
Update: I nuked python and started with a clean install as outlined here.
I followed the python-goose instructions and did:
mkvirtualenv --no-site-packages goose
git clone https://github.com/grangier/python-goose.git
cd python-goose
pip install -r requirements.txt
python setup.py install
pip install -r requirements.txt fails on lxml
Error I get now is:
error: command 'cc' failed with exit status 1
----------------------------------------
Cleaning up...
Command /Users/me/.virtualenvs/goose/bin/python -c "import setuptools, tokenize;__file__='/Users/me/.virtualenvs/goose/build/lxml/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/wg/82j6ndq50tl4m9rjkqszyx8r0000gp/T/pip-c9DtYT-record/install-record.txt --single-version-externally-managed --compile --install-headers
/Users/me/.virtualenvs/goose/include/site/python2.7 failed with error code 1 in
/Users/me/.virtualenvs/goose/build/lxml
Is there anything I am doing incorrectly or are there any alternative ways I can try to get this working?

Finally found a solution:
export CFLAGS=-Qunused-arguments
export CPPFLAGS=-Qunused-arguments
Seems like this error is caused by the latest clang update from Apple that came with Xcode 5.1
"Update: Did not expect this to get so much attention, but here's more
detail: the clang 3.4 Apple is shipping defaults to erroring on
unknown flags, but CPython builds modules using the same set of flags
it was compiled with originally. The system CPython was compiled with
several flags that are unknown by clang, thus causing this problem."
Read more here: https://stackoverflow.com/a/22315129/2673189
Again, thanks to Wolph and pseudocubic, you were very helpful.