如何让ipythons RichIPythonWidget在pyinstaller环境中使用pyside？

Question

我有一个使用pyinstaller构建的应用程序,它使用PySide作为其Qt Gui.我通过嵌入ipython qtconsole包含了一个交互式提示.这打破了pyinstaller创建的构建.

这是一个最小(非)工作的例子:

from PySide.QtGui import *

from IPython.qt.console.rich_ipython_widget import RichIPythonWidget
from IPython.qt.inprocess import QtInProcessKernelManager
from IPython.lib import guisupport

class IPythonWidget(RichIPythonWidget):
    def __init__(self, parent=None, **kwargs):
        super(self.__class__, self).__init__(parent)
        self.app = app = guisupport.get_app_qt4()
        self.kernel_manager = kernel_manager = QtInProcessKernelManager()
        kernel_manager.start_kernel()

        self.kernel = kernel = kernel_manager.kernel
        kernel.gui = 'qt4'
        self.kernel_client = kernel_client = kernel_manager.client()
        kernel_client.start_channels()

if __name__ == '__main__':
    app = QApplication([])
    i = IPythonWidget()
    i.show()
    app.exec_()

当直接从源(python mwe.py)运行时,它弹出一个ipython qt控制台窗口.当我在一个目录中使用pyinstaller捆绑这个并运行exe时,我得到这个:

Traceback (most recent call last):
  File "<string>", line 3, in <module>
  File "C:\Python27\Lib\site-packages\PyInstaller\loader\pyi_importers.py", line 270, in load_module
    exec(bytecode, module.__dict__)
  File "H:\Home\pydd2swid\build\mwe\out00-PYZ.pyz\IPython.qt.console.rich_ipython_widget", line 8, in <module>
  File "C:\Python27\Lib\site-packages\PyInstaller\loader\pyi_importers.py", line 270, in load_module
    exec(bytecode, module.__dict__)
  File "H:\Home\pydd2swid\build\mwe\out00-PYZ.pyz\IPython.external.qt", line 23, in <module>
  File "H:\Home\pydd2swid\build\mwe\out00-PYZ.pyz\IPython.external.qt_loaders", line 296, in load_qt
ImportError:
    Could not load requested Qt binding. Please ensure that
    PyQt4 >= 4.7, PyQt5 or PySide >= 1.0.3 is available,
    and only one is imported per session.

    Currently-imported Qt library:   'pyqtv1'
    PyQt4 installed:                 False
    PyQt5 installed:                 False
    PySide >= 1.0.3 installed:       False
    Tried to load:                   ['pyside', 'pyqt', 'pyqt5']

当我构建一个可执行文件(pyinstaller -F mwe.py)并运行它时,我得到这个:

WARNING: file already exists but should not: C:\Users\SARNOW4\AppData\Local\Temp\_MEI62362\Include\pyconfig.h
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\Python27\Lib\site-packages\PyInstaller\loader\pyi_importers.py", line 270, in load_module
    exec(bytecode, module.__dict__)
  File "H:\Home\pydd2swid\build\mwe\out00-PYZ.pyz\PySide", line 41, in <module>
  File "H:\Home\pydd2swid\build\mwe\out00-PYZ.pyz\PySide", line 11, in _setupQtDirectories
  File "H:\Home\pydd2swid\build\mwe\out00-PYZ.pyz\PySide._utils", line 93, in get_pyside_dir
  File "C:\Python27\Lib\site-packages\PyInstaller\loader\pyi_importers.py", line 409, in load_module
    module = imp.load_module(fullname, fp, filename, self._c_ext_tuple)
RuntimeError: the sip module has already registered a module called PyQt4.QtCore

似乎pyinstaller挂钩导入机制的方式不适用于ipythons qt_loaders.我怎样才能解决这个问题？
我在Windows 7上使用pyinstaller 2.1,ipython 3.0,python 2.7(32位).

Answer 1

您可以通过两种方式修复它:

1)覆盖IPython.external.qt_loaders中包含的函数load_qt,例如:

def load_qt(api_options):
    from PySide import QtCore, QtGui, QtSvg
    return QtCore, QtGui, QtSvg, 'pyside'

所以,你将强制选择PySide模块.

2)没有覆盖安装的IPython模块的另一个解决方案是在导入IPython小部件之前将该函数作为参考传递,例如

def new_load_qt(api_options):
    from PySide import QtCore, QtGui, QtSvg
    return QtCore, QtGui, QtSvg, 'pyside'

from IPython.external import  qt_loaders
qt_loaders.load_qt = new_load_qt

from IPython.qt.console.rich_ipython_widget import RichIPythonWidget

现在它应该工作.

它是使用PyInstaller Develop Version进行测试的