Develop Reference

Python.h not found even after I used sudo install

I've been studying darkflow from the following link;
https://github.com/thtrieu/darkflow
on Ubuntu 20.04
I thought there was a problem in my flow file, so I tried to rebuild the build file by the following code
dyi#D-FIP7VAE:~/Tiny-YOLO-voc-traffic-sign-detection$ python3.7 setup.py build_ext --inplace<br/>
and this is what i got.
setup.py:6: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses
import imp
running build_ext
building 'darkflow.cython_utils.nms' extension
x86_64-linux-gnu-gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O2 -Wall -g -fdebug-prefix-map=/build/python3.7-ZE4Yn0/python3.7-3.7.10=. -fstack-protector-strong -Wformat -Werror=format-security -g -fdebug-prefix-map=/build/python3.7-ZE4Yn0/python3.7-3.7.10=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I/home/dyi/.local/lib/python3.7/site-packages/numpy/core/include -I/usr/include/python3.7m -c darkflow/cython_utils/nms.c -o build/temp.linux-x86_64-3.7/darkflow/cython_utils/nms.o
darkflow/cython_utils/nms.c:29:10: fatal error: Python.h: No such file or directory
29 | #include "Python.h"
| ^~~~~~~~~~
compilation terminated.
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
so I tried this
sudo apt-get install python3-dev
But this didn't work, and I get the same error over and over.
Can anybody find the reason why..?

You can try :
sudo apt install libpython3.7-dev

configure flags/options to build 32 bit python on mac (OS X)

Python is embedded in an app that comes in 32 bit and 64 bit flavours. I need both to release my code and I need to build from source for debugging.
I tried the only configure variable that seemed 32-bit specific (--with-universal-archs=32-bit) but that didn't seem to add any flags to gcc. eg:
gcc -c -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers -I. -I./Include -DPy_BUILD_CORE -o Programs/python.o ./Programs/python.c

from How do I build OpenSSL as 32-bit (i386) on Mac OS X?
$ export CFLAGS="-arch i386"
$ export LDFLAGS="-arch i386"
$ ./configure
$ make

Installing Matplotlib on CentOS 6.5

I'm trying to get matplotlib-1.4.0 installed on CentOS 6.5 with Python 2.7.8. I've tried installing with pip and from source. I initially got an error message stating I needed a newer version of Freetype2, which I then installed (version 2.5.3) to /usr/local/bin, /usr/local/include, and /usr/local/lib. The older version of Freetype2 (2.3.11) is in /usr/bin, /usr/include/freetype2/freetype, and /usr/lib.
Now when I try installing matplotlib (python setup.py build) it looks like the include paths are all pointing to the wrong (old) version of Freetype2, and I can't figure out how to change the appropriate paths to point to the newer version of Freetype2. The actual error message is below, and is pretty messy. I couldn't find much about his error online, but I can see that the wrong Freetype2 path so I'm guessing that's what causing the issue. Any tips?
Found tips on other threads about adding /usr/include/freetype symlink to point to /usr/local/include/freetype2, but that didn't help.
building 'matplotlib.ft2font' extension
gcc -pthread -fno-strict-aliasing -O3 -m64 -mfpmath=sse -msse2 -mtune=generic -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -DPY_ARRAY_UNIQUE_SYMBOL=MPL_matplotlib_ft2font_ARRAY_API -DPYCXX_ISO_CPP_LIB=1 -I/usr/local/python2/2.7.8/x86_64/gcc46/nonet/lib/python2.7/site-packages/numpy/core/include -I/usr/include/freetype2 -I/usr/local/include -I/usr/include -I. -Iextern -I/usr/local/python2/2.7.8/x86_64/gcc46/nonet/include/python2.7 -c src/ft2font.cpp -o build/temp.linux-x86_64-2.7/src/ft2font.o
In file included from /usr/local/python2/2.7.8/x86_64/gcc46/nonet/lib/python2.7/site-packages/numpy/core/include/numpy/ndarraytypes.h:1761:0,
from /usr/local/python2/2.7.8/x86_64/gcc46/nonet/lib/python2.7/site-packages/numpy/core/include/numpy/ndarrayobject.h:17,
from src/file_compat.h:7,
from src/ft2font.cpp:7:
/usr/local/python2/2.7.8/x86_64/gcc46/nonet/lib/python2.7/site-packages/numpy/core/include/numpy/npy_1_7_deprecated_api.h:15:2: warning: #warning "Using deprecated NumPy API, disable it by " "#defining NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION" [-Wcpp]
In file included from src/ft2font.cpp:7:0:
src/file_compat.h:31:0: warning: "npy_fseek" redefined [enabled by default]
/usr/local/python2/2.7.8/x86_64/gcc46/nonet/lib/python2.7/site-packages/numpy/core/include/numpy/npy_common.h:86:0: note: this is the location of the previous definition
src/file_compat.h:32:0: warning: "npy_ftell" redefined [enabled by default]
/usr/local/python2/2.7.8/x86_64/gcc46/nonet/lib/python2.7/site-packages/numpy/core/include/numpy/npy_common.h:91:0: note: this is the location of the previous definition
src/ft2font.cpp: In member function ‘Py::Object FT2Image::py_write_bitmap(const Py::Tuple&)’:
src/ft2font.cpp:184:15: warning: unused variable ‘offset’ [-Wunused-variable]
gcc -pthread -fno-strict-aliasing -O3 -m64 -mfpmath=sse -msse2 -mtune=generic -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -DPY_ARRAY_UNIQUE_SYMBOL=MPL_matplotlib_ft2font_ARRAY_API -DPYCXX_ISO_CPP_LIB=1 -I/usr/local/python2/2.7.8/x86_64/gcc46/nonet/lib/python2.7/site-packages/numpy/core/include -I/usr/include/freetype2 -I/usr/local/include -I/usr/include -I. -Iextern -I/usr/local/python2/2.7.8/x86_64/gcc46/nonet/include/python2.7 -c src/mplutils.cpp -o build/temp.linux-x86_64-2.7/src/mplutils.o
In file included from /usr/local/python2/2.7.8/x86_64/gcc46/nonet/include/python2.7/Python.h:8:0,
from src/mplutils.h:18,
from src/mplutils.cpp:6:
/usr/local/python2/2.7.8/x86_64/gcc46/nonet/include/python2.7/pyconfig.h:1182:0: warning: "_POSIX_C_SOURCE" redefined [enabled by default]
/usr/include/features.h:162:0: note: this is the location of the previous definition
/usr/local/python2/2.7.8/x86_64/gcc46/nonet/include/python2.7/pyconfig.h:1204:0: warning: "_XOPEN_SOURCE" redefined [enabled by default]
/usr/include/features.h:164:0: note: this is the location of the previous definition
gcc -pthread -fno-strict-aliasing -O3 -m64 -mfpmath=sse -msse2 -mtune=generic -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -DPY_ARRAY_UNIQUE_SYMBOL=MPL_matplotlib_ft2font_ARRAY_API -DPYCXX_ISO_CPP_LIB=1 -I/usr/local/python2/2.7.8/x86_64/gcc46/nonet/lib/python2.7/site-packages/numpy/core/include -I/usr/include/freetype2 -I/usr/local/include -I/usr/include -I. -Iextern -I/usr/local/python2/2.7.8/x86_64/gcc46/nonet/include/python2.7 -c extern/CXX/cxxsupport.cxx -o build/temp.linux-x86_64-2.7/extern/CXX/cxxsupport.o
gcc -pthread -fno-strict-aliasing -O3 -m64 -mfpmath=sse -msse2 -mtune=generic -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -DPY_ARRAY_UNIQUE_SYMBOL=MPL_matplotlib_ft2font_ARRAY_API -DPYCXX_ISO_CPP_LIB=1 -I/usr/local/python2/2.7.8/x86_64/gcc46/nonet/lib/python2.7/site-packages/numpy/core/include -I/usr/include/freetype2 -I/usr/local/include -I/usr/include -I. -Iextern -I/usr/local/python2/2.7.8/x86_64/gcc46/nonet/include/python2.7 -c extern/CXX/cxx_extensions.cxx -o build/temp.linux-x86_64-2.7/extern/CXX/cxx_extensions.o
gcc -pthread -fno-strict-aliasing -O3 -m64 -mfpmath=sse -msse2 -mtune=generic -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -DPY_ARRAY_UNIQUE_SYMBOL=MPL_matplotlib_ft2font_ARRAY_API -DPYCXX_ISO_CPP_LIB=1 -I/usr/local/python2/2.7.8/x86_64/gcc46/nonet/lib/python2.7/site-packages/numpy/core/include -I/usr/include/freetype2 -I/usr/local/include -I/usr/include -I. -Iextern -I/usr/local/python2/2.7.8/x86_64/gcc46/nonet/include/python2.7 -c extern/CXX/IndirectPythonInterface.cxx -o build/temp.linux-x86_64-2.7/extern/CXX/IndirectPythonInterface.o
gcc -pthread -fno-strict-aliasing -O3 -m64 -mfpmath=sse -msse2 -mtune=generic -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -DPY_ARRAY_UNIQUE_SYMBOL=MPL_matplotlib_ft2font_ARRAY_API -DPYCXX_ISO_CPP_LIB=1 -I/usr/local/python2/2.7.8/x86_64/gcc46/nonet/lib/python2.7/site-packages/numpy/core/include -I/usr/include/freetype2 -I/usr/local/include -I/usr/include -I. -Iextern -I/usr/local/python2/2.7.8/x86_64/gcc46/nonet/include/python2.7 -c extern/CXX/cxxextensions.c -o build/temp.linux-x86_64-2.7/extern/CXX/cxxextensions.o
g++ -pthread -shared build/temp.linux-x86_64-2.7/src/ft2font.o build/temp.linux-x86_64-2.7/src/mplutils.o build/temp.linux-x86_64-2.7/extern/CXX/cxxsupport.o build/temp.linux-x86_64-2.7/extern/CXX/cxx_extensions.o build/temp.linux-x86_64-2.7/extern/CXX/IndirectPythonInterface.o build/temp.linux-x86_64-2.7/extern/CXX/cxxextensions.o -L/usr/local/lib -L/usr/local/lib64 -L/usr/lib -L/usr/lib64 -L/usr/local/python2/2.7.8/x86_64/gcc46/nonet/lib -lfreetype -lstdc++ -lm -lpython2.7 -o build/lib.linux-x86_64-2.7/matplotlib/ft2font.so
/usr/bin/ld: /usr/local/lib/libpython2.7.a(abstract.o): relocation R_X86_64_32S against `_Py_NotImplementedStruct' can not be used when making a shared object; recompile with -fPIC
/usr/local/lib/libpython2.7.a: could not read symbols: Bad value
collect2: ld returned 1 exit status
error: command 'g++' failed with exit status 1

Although I'm using python-2.6 I just bodged a way through the exact same freetype error: essentially you can simply download the matplotlib python archive and edit the requirement for freetype-2.4 to freetype-2.3. This was all done in a virtualenv naturally.
get a copy of the current latest matplotlib
pip install --download . matplotlib==1.4.0
untar the result
tar -xzvf matplotlib-1.4.0.tar.gz
edit the explicit requirement for freetype from 2.4 to 2.3 (line 945)
vi matplotlib-1.4.0/setupext.py
min_version='2.4', version=version)
recreate the archive
tar -czvf matplotlib-1.4.0.tar.gz
install the requirements
pip install numpy
pip install geojson==1.0.6
Install your modified local archive, and watch as it compiles
pip install --verbose matplotlib-1.4.0.tar.gz

I finally had time to return to this and it had nothing to do with Freetype. The issue was the wrong version of libpython2.7 being picked up during the build. Specifically in this line:
g++ -pthread -shared build/temp.linux-x86_64-2.7/src/ft2font.o build/temp.linux-x86_64-2.7/src/mplutils.o build/temp.linux-x86_64-2.7/extern/CXX/cxxsupport.o build/temp.linux-x86_64-2.7/extern/CXX/cxx_extensions.o build/temp.linux-x86_64-2.7/extern/CXX/IndirectPythonInterface.o build/temp.linux-x86_64-2.7/extern/CXX/cxxextensions.o -L/usr/local/lib -L/usr/local/lib64 -L/usr/lib -L/usr/lib64 -L/usr/local/python2/2.7.8/x86_64/gcc46/nonet/lib -lfreetype -lstdc++ -lm -lpython2.7 -o build/lib.linux-x86_64-2.7/matplotlib/ft2font.so
The first -L directory is /usr/local/lib which contained a different version of the python library (libpython2.7.a) than the one I should have been compiling against. I moved this file temporarily and the build was then successful (it found the correct version in /usr/local/python2/2.7.8/x86_64/gcc46/nonet/lib).
I'm not exactly sure where the python lib in /usr/local/lib originated from. If it's the system version then this could be considered a bug in the matplotlib build script.

I also have this problem when compiling the matplotlib-1.4.3 from source code. After this error, I simply export LDFLAGS="/home/ubuntu/softwares/python-2.7.11/lib", then python setup.py install. The error is gone and I can install the matplotlib successfully.

In case you want to install the most recent version of matplotlib compatible with Python 2.6 on CentOS 6 (currently 6.9 when I wrote this), here's how I did.
Logged as root, type:
sudo yum install -y epel-release
sudo yum install -y python-pip
sudo yum install -y gcc gcc-c++ python-argparse python-devel freetype-devel libpng-devel
pip install --upgrade pip
pip install numpy==1.11.3 # latest version working with Python 2.6
pip install --upgrade distribute # required by matplotlib 1.4
pip install -I setuptools # "distribute" installation will remove setuptools, so we need to reinstall it
pip install matplotlib==1.4.3 # latest version working with Python 2.6

Install Twisted in python failed with 'No such file'

I want use Twisted in Python, but when I installing ,in comes this error, how to handle it?
....
running build_ext
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c conftest.c -o conftest.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c conftest.c -o conftest.o
building 'twisted.runner.portmap' extension
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c twisted/runner/portmap.c -o build/temp.linux-i686-2.7/twisted/runner/portmap.o
twisted/runner/portmap.c:10:20: fatal error: Python.h: No such file or directory
compilation terminated.
error: command 'gcc' failed with exit status 1

You are missing the python development headers, needed to build packages that need to compile extensions.
If you are building on OSX, make sure you either install a prebuilt mac python package or if building python from source, use the framework flag when configuring. And also make sure you have XCODE installed so that you have a compiler.
If you are building on Linux, you probably need to install the python devel headers. For instance on Ubuntu you would need: apt-get install build-essential python-dev.
Once you have the python development headers, twisted should be able to find them when you build with that python interpreter.

How do I make the Windmill IDE appear for https sites on Ubuntu?

I am trying to use the Windmill Testing Framework over https. I'm running Ubuntu 11.10 with Python 2.7, installing windmill and pyopenssl in a virtualenv via pip. (Installation sequence is included below for reference.)
When I run windmill firefox http://en.wikipedia.org the Windmill IDE comes up fine. When I run windmill firefox https://en.wikipedia.org Firefox starts, but the IDE never appears. (I have verified that when Windmill starts Firefox on Ubuntu, the CA for https is already installed.)
Am I encountering a bug, or is there something else I need to do to get the IDE to work on https addresses?
Installation sequence
myuser#mycomputer:~$ mkvirtualenv --no-site-packages windmill_test
New python executable in windmill_test/bin/python
Installing distribute....................................................................................................................................................................................done.
Installing pip...............done.
virtualenvwrapper.user_scripts creating /home/myuser/.virtualenvs/windmill_test/bin/predeactivate
virtualenvwrapper.user_scripts creating /home/myuser/.virtualenvs/windmill_test/bin/postdeactivate
virtualenvwrapper.user_scripts creating /home/myuser/.virtualenvs/windmill_test/bin/preactivate
virtualenvwrapper.user_scripts creating /home/myuser/.virtualenvs/windmill_test/bin/postactivate
virtualenvwrapper.user_scripts creating /home/myuser/.virtualenvs/windmill_test/bin/get_env_details
(windmill_test)myuser#mycomputer:~$ pip install pyopenssl
Downloading/unpacking pyopenssl
Downloading pyOpenSSL-0.13.tar.gz (250Kb): 250Kb downloaded
Running setup.py egg_info for package pyopenssl
warning: no previously-included files matching '*.pyc' found anywhere in distribution
Installing collected packages: pyopenssl
Running setup.py install for pyopenssl
building 'OpenSSL.crypto' extension
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/crypto/crypto.c -o build/temp.linux-i686-2.7/OpenSSL/crypto/crypto.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/crypto/x509.c -o build/temp.linux-i686-2.7/OpenSSL/crypto/x509.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/crypto/x509name.c -o build/temp.linux-i686-2.7/OpenSSL/crypto/x509name.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/crypto/pkey.c -o build/temp.linux-i686-2.7/OpenSSL/crypto/pkey.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/crypto/x509store.c -o build/temp.linux-i686-2.7/OpenSSL/crypto/x509store.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/crypto/x509req.c -o build/temp.linux-i686-2.7/OpenSSL/crypto/x509req.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/crypto/x509ext.c -o build/temp.linux-i686-2.7/OpenSSL/crypto/x509ext.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/crypto/pkcs7.c -o build/temp.linux-i686-2.7/OpenSSL/crypto/pkcs7.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/crypto/pkcs12.c -o build/temp.linux-i686-2.7/OpenSSL/crypto/pkcs12.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/crypto/netscape_spki.c -o build/temp.linux-i686-2.7/OpenSSL/crypto/netscape_spki.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/crypto/revoked.c -o build/temp.linux-i686-2.7/OpenSSL/crypto/revoked.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/crypto/crl.c -o build/temp.linux-i686-2.7/OpenSSL/crypto/crl.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/util.c -o build/temp.linux-i686-2.7/OpenSSL/util.o
gcc -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions build/temp.linux-i686-2.7/OpenSSL/crypto/crypto.o build/temp.linux-i686-2.7/OpenSSL/crypto/x509.o build/temp.linux-i686-2.7/OpenSSL/crypto/x509name.o build/temp.linux-i686-2.7/OpenSSL/crypto/pkey.o build/temp.linux-i686-2.7/OpenSSL/crypto/x509store.o build/temp.linux-i686-2.7/OpenSSL/crypto/x509req.o build/temp.linux-i686-2.7/OpenSSL/crypto/x509ext.o build/temp.linux-i686-2.7/OpenSSL/crypto/pkcs7.o build/temp.linux-i686-2.7/OpenSSL/crypto/pkcs12.o build/temp.linux-i686-2.7/OpenSSL/crypto/netscape_spki.o build/temp.linux-i686-2.7/OpenSSL/crypto/revoked.o build/temp.linux-i686-2.7/OpenSSL/crypto/crl.o build/temp.linux-i686-2.7/OpenSSL/util.o -lssl -lcrypto -o build/lib.linux-i686-2.7/OpenSSL/crypto.so
building 'OpenSSL.rand' extension
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/rand/rand.c -o build/temp.linux-i686-2.7/OpenSSL/rand/rand.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/util.c -o build/temp.linux-i686-2.7/OpenSSL/util.o
gcc -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions build/temp.linux-i686-2.7/OpenSSL/rand/rand.o build/temp.linux-i686-2.7/OpenSSL/util.o -lssl -lcrypto -o build/lib.linux-i686-2.7/OpenSSL/rand.so
building 'OpenSSL.SSL' extension
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/ssl/connection.c -o build/temp.linux-i686-2.7/OpenSSL/ssl/connection.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/ssl/context.c -o build/temp.linux-i686-2.7/OpenSSL/ssl/context.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/ssl/ssl.c -o build/temp.linux-i686-2.7/OpenSSL/ssl/ssl.o
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c OpenSSL/util.c -o build/temp.linux-i686-2.7/OpenSSL/util.o
gcc -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions build/temp.linux-i686-2.7/OpenSSL/ssl/connection.o build/temp.linux-i686-2.7/OpenSSL/ssl/context.o build/temp.linux-i686-2.7/OpenSSL/ssl/ssl.o build/temp.linux-i686-2.7/OpenSSL/util.o -lssl -lcrypto -o build/lib.linux-i686-2.7/OpenSSL/SSL.so
warning: no previously-included files matching '*.pyc' found anywhere in distribution
Successfully installed pyopenssl
Cleaning up...
(windmill_test)myuser#mycomputer:~$ pip install windmill
Downloading/unpacking windmill
Downloading windmill-1.6.tar.gz (1.6Mb): 1.6Mb downloaded
Running setup.py egg_info for package windmill
Installing collected packages: windmill
Running setup.py install for windmill
Installing windmill script to /home/myuser/.virtualenvs/windmill_test/bin
Successfully installed windmill
Cleaning up...
(windmill_test)myuser#mycomputer:~$ pip freeze
distribute==0.6.19
pyOpenSSL==0.13
windmill==1.6
wsgiref==0.1.2
http
(windmill_test)myuser#mycomputer:~$ windmill firefox http://en.wikipedia.org
windmill.bin.shell_objects: INFO ['/home/myuser/.mozilla/firefox/p3t9ijqj.mozrunner//mozrunner-firefox', '-profile', '/home/myuser/.mozilla/firefox/p3t9ijqj.mozrunner/', 'http://en.wikipedia.org/windmill-serv/start.html']
Attempts to load http://en.wikipedia.org/windmill-serv/start.html but resolves to http://en.wikipedia.org/wiki/Main_Page . IDE loads.
https
(windmill_test)myuser#mycomputer:~$ windmill firefox https://en.wikipedia.org
windmill.bin.shell_objects: INFO ['/home/myuser/.mozilla/firefox/p3t9ijqj.mozrunner//mozrunner-firefox', '-profile', '/home/myuser/.mozilla/firefox/p3t9ijqj.mozrunner/', 'https://en.wikipedia.org/windmill-serv/start.html']
Attempts to load https://en.wikipedia.org/windmill-serv/start.html and resolves to that pages (which displays a 404 page, which then redirects to https://en.wikipedia.org/wiki/Windmill-serv/start.html - I'm just using Wikipedia as an example here, so it doesn't matter that it returns 404s or "Wikipedia does not have an article with this exact name"). The IDE never loads.

This is not a bug, this was a user error :D
I was running windmill firefox https://www.example.com instead of windmill firefox https://www.example.com ssl