Question

我按照以下说明为python2.7安装PyQt5。

我的系统是Mac OS Al Captain。使用Qt5.5库，PyQt5_gpl-5.7，sip-4.18.1库。

git commit

但是，它会产生如下错误，并拒绝启动应用程序代码，如下所示：

  mkdir pyqt
  cd pyqt/
  virtualenv qtenv
  source qtenv/bin/activate

  mkdir tmp
  cp /Users/ge/Downloads/PyQt-gpl-5.4.1.tar.gz ./tmp
  cp /Users/ge/Downloads/sip-4.16.7.tar.gz ./tmp
  cd tmp/
  tar xvf sip-4.16.7.tar.gz 
  tar xvf PyQt-gpl-5.4.1.tar.gz 

  cd sip-4.16.7
  python configure.py -d /Users/ge/pyqt/qtenv/lib/python2.7/site-packages --arch x86_64
  make
  sudo make install
  sudo make clean

  cd ../PyQt-gpl-5.4.1
  python configure.py --destdir /Users/ge/pyqt/qtenv/lib/python2.7/site-packages --qmake /Applications/Qt/5.4/clang_64/bin/qmake 
  make
  sudo make install
  sudo make clean

产生的错误是：

from PyQt5 import QtGui  # (the example applies equally well to PySide)
import pyqtgraph as pg

## Always start by initializing Qt (only once per application)
app = QtGui.QApplication([])

## Define a top-level widget to hold everything
w = QtGui.QWidget()

## Create some widgets to be placed inside
btn = QtGui.QPushButton('press me')
text = QtGui.QLineEdit('enter text')
listw = QtGui.QListWidget()
plot = pg.PlotWidget()

## Create a grid layout to manage the widgets size and position
layout = QtGui.QGridLayout()
w.setLayout(layout)

## Add widgets to the layout in their proper positions
layout.addWidget(btn, 0, 0)   # button goes in upper-left
layout.addWidget(text, 1, 0)   # text edit goes in middle-left
layout.addWidget(listw, 2, 0)  # list widget goes in bottom-left
layout.addWidget(plot, 0, 1, 3, 1)  # plot goes on right side, spanning 3 rows

## Display the widget as a new window
w.show()

## Start the Qt event loop
app.exec_()

然后我用谷歌搜索，一个临时解决方案是添加一个env路径到系统名为：

This application failed to start because it could not find or load the Qt platform plugin “cocoa”

我想知道在安装pyqt5时是否有任何方法可以设置它，而不是在安装后将此路径设置为我的系统。它应该是一些configure.py选项，对吗？

此应用程序无法启动，因为它无法找到或加载Qt平台插件“cocoa”

0 个答案: