the sip module implements API v11.0 but the PyQt5.QtCore module requires API v11.1
the sip module implements API v11.0 but the PyQt5.QtCore module requires API v11.1
PyQt是Python的一个跨平台图形开发工具集，是Python与Qt的成功融合。PyQt包含了大约440个类、超过6000个的函数和方法，灰常强大。需要注意的是，Eric（一种Python IDE，依赖PyQt）当前最新的稳定版Eric5只支持PyQt4（确切的说是PyQt4.8以上5.0以下），支持PyQt5的Eric版本现在仅为Eric6.0 snapshot版，该版本包含最新的Eric5的所有功能，但稳定性需要测试。如果你希望使用稳定的Eric5，请在此步骤安装PyQt4的最新版PyQt4.11.2。这里我们安装PyQt5.3.2.
PyQt5.3.2下载： 安装过程：
tar -zxvf PyQt-gpl-5.3.2.tar.gz
cd PyQt-gpl-5.3.2
python3 configure.py
tar -zxvf PyQt-gpl-5.3.2.tar.gz cd PyQt-gpl-5.3.2 python3 configure.py注意：此命令生成各种Qt模块后，其中的QtWebKitWidgets模块由于Qt4和Qt5的qprinter.h所属模块的调整（Qt4存在于QtGui中，Qt5将其调整到QtPrintSupport中了），QtWebKitWidgets的Makefile中缺失了对QtPrintSupport的头文件目录引用，会导致后面编译PyQt5时无法找到qprinter.h头文件，编译失败（编译过程非常漫长）：
qprinter.h: No such file or directory
qprinter.h: No such file or directory所以需要向刚生成的QtWebKitWidgets模块源文件的MakeFile文件的INCPATH中添加QtPrintSupport引用。
原INCPATH为：
INCPATH = -I/opt/Qt/5.3/gcc/mkspecs/linux-g++ -I. -I. -I/usr/include/python3.4m -I/opt/Qt/5.3/gcc/include -I/opt/Qt/5.3/gcc/include/QtWebKitWidgets -I/opt/Qt/5.3/gcc/include/QtWebKit -I/opt/Qt/5.3/gcc/include/QtWidgets -I/opt/Qt/5.3/gcc/include/QtNetwork -I/opt/Qt/5.3/gcc/include/QtGui -I/opt/Qt/5.3/gcc/include/QtCore -I.
INCPATH = -I/opt/Qt/5.3/gcc/mkspecs/linux-g++ -I. -I. -I/usr/include/python3.4m -I/opt/Qt/5.3/gcc/include -I/opt/Qt/5.3/gcc/include/QtWebKitWidgets -I/opt/Qt/5.3/gcc/include/QtWebKit -I/opt/Qt/5.3/gcc/include/QtWidgets -I/opt/Qt/5.3/gcc/include/QtNetwork -I/opt/Qt/5.3/gcc/include/QtGui -I/opt/Qt/5.3/gcc/include/QtCore -I.修改为：
INCPATH = -I/opt/Qt/5.3/gcc/mkspecs/linux-g++ -I. -I. -I/usr/include/python3.4m -I/opt/Qt/5.3/gcc/include -I/opt/Qt/5.3/gcc/include/QtWebKitWidgets -I/opt/Qt/5.3/gcc/include/QtWebKit -I/opt/Qt/5.3/gcc/include/QtWidgets -I/opt/Qt/5.3/gcc/include/QtNetwork -I/opt/Qt/5.3/gcc/include/QtPrintSupport -I/opt/Qt/5.3/gcc/include/QtGui -I/opt/Qt/5.3/gcc/include/QtCore -I.
INCPATH = -I/opt/Qt/5.3/gcc/mkspecs/linux-g++ -I. -I. -I/usr/include/python3.4m -I/opt/Qt/5.3/gcc/include -I/opt/Qt/5.3/gcc/include/QtWebKitWidgets -I/opt/Qt/5.3/gcc/include/QtWebKit -I/opt/Qt/5.3/gcc/include/QtWidgets -I/opt/Qt/5.3/gcc/include/QtNetwork -I/opt/Qt/5.3/gcc/include/QtPrintSupport -I/opt/Qt/5.3/gcc/include/QtGui -I/opt/Qt/5.3/gcc/include/QtCore -I.或者可以直接在QtWebKitWidgets模块源文件的QtWebKitWidgets.pro文件中加入：
QT += printsupport
QT += printsupport也行。
接下来执行编译安装：
sudo make
sudo make install
sudo make sudo make install配置过程：
安装完成后进入Python3环境验证是否安装成功：
>>>import PyQt5
>>>import PyQt5如果提示不存在PyQt5模块，表示安装的PyQt5没有被python3正确识别。默认的安装路径为python的site-packages目录。通常python3的模块安装路径会分成2个，一个/usr/lib/python3，一个/usr/lib/python3.4，两个路径下的模块都能被python3环境正确调用，但是python3.4的site-packages目录下的模块貌似无法调用。PyQt5偏偏默认安装到此目录了。解决办法是为其创建软连接，保险起见，python3目录和python3.4目录分别创建一个：
sudo ln -s /usr/lib/python3.4/site-packages/PyQt5 /usr/lib/python3.4/PyQt5