PyQt4开发环境搭建指导 基于Windows 10和+ Python3.x+PyQt4

1、windows 平台搭建PyQt4+Python3+Eric6 
本文省去了SIP等安装过程，故采用下载以GPL协议发布的类似于直接安装的exe 的最新版，目前PYQT官网已经不再发布EXE直接安装包，我们采用最终版本搭载Python3.4.4作为开发环境 
1.1 Python3 下载地址 
https://www.python.org/downloads/release/python-344/ 
1.2 PyQt4安装包下载地址 
https://sourceforge.net/projects/pyqt/files/PyQt4/PyQt-4.11.4/PyQt4-4.11.4-gpl-Py3.4-Qt4.8.7-x32.exe/download 
或者64位的直接安装包 
https://sourceforge.net/projects/pyqt/files/PyQt4/PyQt-4.11.4/PyQt4-4.11.4-gpl-Py3.4-Qt4.8.7-x64.exe/download 

1.4 安装过程 
首先安装Python3.4.4 ，默认安装在 C:\Python34 文件下，建议安装全部组件，这里注意只要在第一步勾选添加到系统环境路径中即可。 
再次安装PyQt4 
安装程序会自动识别Python的安装路径，一般默认就是就是Python的安装目录。 

1.5测试PyQt4是否安装成功 

在Python开发环境下，执行下面的代码，查看是否生成了对话框

from __future__ import division
import sys
from math import *
from PyQt4.QtCore import *
from PyQt4.QtGui import *

class Form(QDialog):
def __init__(self, parent=None):
super(Form, self).__init__(parent)
self.browser = QTextBrowser()
self.lineedit = QLineEdit("Type an expression and press Enter")
self.lineedit.selectAll()
layout = QVBoxLayout()
layout.addWidget(self.browser)
layout.addWidget(self.lineedit)
self.setLayout(layout)
self.lineedit.setFocus()
self.connect(self.lineedit, SIGNAL("returnPressed()"),
self.updateUi)
self.setWindowTitle("Calculate")

def updateUi(self):
try:
text = self.lineedit.text()
self.browser.append("%s = <b>%s</b>" % (text, eval(text)))
except:
self.browser.append(
"<font color=red>%s is invalid!</font>" % text)

app = QApplication(sys.argv)
form = Form()
form.show()
app.exec_()

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最终生成的是一个计算器小程序