python-igraph on windows10 64bit

igraph安装记录:

1. 在http://www.lfd.uci.edu/~gohlke/pythonlibs/找到对应版本的python-igraph 这里是anaconda的python2.7.11 64bit
   所以是选择python_igraph-0.7.1.post6-cp27-none-win_amd64.whl 其中cp27指python2.7
2. pip安装
3. 在http://www.lfd.uci.edu/~gohlke/pythonlibs/找到对应版本的pycairo
   选择pycairo-1.10.0-cp27-none-win_amd64.whl
   这里如果是32bit 可以根据这个http://hal.elte.hu/~nepusz/development/igraph/tutorial/install.html 安装
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4. 不确定是否需要接下来的dll库根据http://hal.elte.hu/~nepusz/development/igraph/tutorial/install.html补全dll
   ```
   In case you use a version of Python for which the above site does not provide an installer, you can install it from an alternative source in a slightly more complicated way by following the steps below:

   Get the latest PyCairo for Windows installer from http://ftp.gnome.org/pub/gnome/binaries/win32/pycairo/1.8. Make sure you grab the one that matches your Python version. At the time of writing, the above folder contained installers for Python 2.6 and 2.7 only. You may also try and go one level up, then down then 1.4 subfolder – these are older versions, but they work with Python 2.5 and Python 2.6 as well.
   Install PyCairo using the installer. The installer extracts the necessary files into Lib\site-packages\cairo within the folder where Python is installed. Unfortunately there are some extra DLLs which are required to make Cairo work, so we have to get these as well.
   Head to http://ftp.gnome.org/pub/gnome/binaries/win32/dependencies/ and get the binary versions of Cairo (cairo_1.8.10-3_win32.zip at the time of writing), Fontconfig (fontconfig_2.8.0-2_win32.zip), Freetype (freetype_2.4.4-1_win32.zip), Expat (expat_2.0.1-1_win32.zip), libpng (libpng_1.4.3-1_win32.zip) and zlib (zlib_1.2.5-2_win32.zip). Version numbers may vary, so be adaptive! Each ZIP file will contain a bin subfolder with a DLL file in it. Put the following DLLs in Lib\site-packages\cairo within your Python installation:
   freetype6.dll (from freetype_2.4.4-1_win32.zip)
   libcairo-2.dll (from cairo_1.8.10-3_win32.zip)
   libexpat-1.dll (from expat_2.0.1-1_win32.zip)
   libfontconfig-1.dll (from fontconfig_2.8.0-2_win32.zip)
   libpng14-14.dll (from libpng_1.4.3-1_win32.zip)
   zlib1.dll (from zlib_1.2.5-2_win32.zip).
   ```
   http://ftp.acc.umu.se/pub/gnome/binaries/win64/dependencies/ 对应64bit

5. 添加dll路径到环境变量中