Question

我是命令行的新手。我曾经在我的上一台MacBook上安装了IPython（配置了所有依赖项），这样我就可以点击破折号上的图标来启动iPython qtconsole（在终端shell之外）。

现在，在我的新MacBook Pro上，在安装了所有相同的文件和依赖项之后，我得到了：

Jacobs-MacBook-Pro:~ Jacob$ ipython qtconsole
Traceback (most recent call last):
  File "/usr/local/bin/ipython", line 8, in <module>
    load_entry_point('ipython==1.0.dev', 'console_scripts', 'ipython')()
  File "/Library/Python/2.7/site-packages/ipython-1.0.dev-py2.7.egg/IPython/frontend/terminal/ipapp.py", line 390, in launch_new_instance
    app.initialize()
  File "<string>", line 2, in initialize
  File "/Library/Python/2.7/site-packages/ipython-1.0.dev-py2.7.egg/IPython/config/application.py", line 84, in catch_config_error
    return method(app, *args, **kwargs)
  File "/Library/Python/2.7/site-packages/ipython-1.0.dev-py2.7.egg/IPython/frontend/terminal/ipapp.py", line 315, in initialize
    super(TerminalIPythonApp, self).initialize(argv)
  File "<string>", line 2, in initialize
  File "/Library/Python/2.7/site-packages/ipython-1.0.dev-py2.7.egg/IPython/config/application.py", line 84, in catch_config_error
    return method(app, *args, **kwargs)
  File "/Library/Python/2.7/site-packages/ipython-1.0.dev-py2.7.egg/IPython/core/application.py", line 323, in initialize
    self.parse_command_line(argv)
  File "/Library/Python/2.7/site-packages/ipython-1.0.dev-py2.7.egg/IPython/frontend/terminal/ipapp.py", line 310, in parse_command_line
    return super(TerminalIPythonApp, self).parse_command_line(argv)
  File "<string>", line 2, in parse_command_line
  File "/Library/Python/2.7/site-packages/ipython-1.0.dev-py2.7.egg/IPython/config/application.py", line 84, in catch_config_error
    return method(app, *args, **kwargs)
  File "/Library/Python/2.7/site-packages/ipython-1.0.dev-py2.7.egg/IPython/config/application.py", line 429, in parse_command_line
    return self.initialize_subcommand(subc, subargv)
  File "<string>", line 2, in initialize_subcommand
  File "/Library/Python/2.7/site-packages/ipython-1.0.dev-py2.7.egg/IPython/config/application.py", line 84, in catch_config_error
    return method(app, *args, **kwargs)
  File "/Library/Python/2.7/site-packages/ipython-1.0.dev-py2.7.egg/IPython/config/application.py", line 361, in initialize_subcommand
    subapp = import_item(subapp)
  File "/Library/Python/2.7/site-packages/ipython-1.0.dev-py2.7.egg/IPython/utils/importstring.py", line 40, in import_item
    module = __import__(package,fromlist=[obj])
  File "/Library/Python/2.7/site-packages/ipython-1.0.dev-py2.7.egg/IPython/frontend/qt/console/qtconsoleapp.py", line 56, in <module>
    from IPython.external.qt import QtCore, QtGui
  File "/Library/Python/2.7/site-packages/ipython-1.0.dev-py2.7.egg/IPython/external/qt.py", line 23, in <module>
    QtCore, QtGui, QtSvg, QT_API = load_qt(api_opts)
  File "/Library/Python/2.7/site-packages/ipython-1.0.dev-py2.7.egg/IPython/external/qt_loaders.py", line 241, in load_qt
    result = loaders[api]()
  File "/Library/Python/2.7/site-packages/ipython-1.0.dev-py2.7.egg/IPython/external/qt_loaders.py", line 171, in import_pyqt4
    from PyQt4 import QtGui, QtCore, QtSvg
ImportError: dlopen(/Library/Python/2.7/site-packages/PyQt4/QtGui.so, 2): Library not loaded: /usr/local/lib/QtGui.framework/Versions/4/QtGui
  Referenced from: /Library/Python/2.7/site-packages/PyQt4/QtGui.so
  Reason: image not found

并再次成为新手，我认为部分问题可能依赖于输出，这里：

Jacobs-MacBook-Pro:~ Jacob$ brew install qt
Warning: It appears you have MacPorts or Fink installed.
Software installed with other package managers causes known problems for
Homebrew. If a formula fails to build, uninstall MacPorts/Fink and try again.
Warning: qt-4.8.4 already installed, it's just not linked

感谢您提前获取任何提示。如果你需要我运行任何命令（查看更多输出），请告诉我！

Answer 1

因此，您有多个Python安装，并且不确定您拥有哪个。

你有Homebrew和MacPorts。

你的MacPorts坏了，你不知道如何解决它。

修复这些可能并不那么难，但我认为现在是时候擦干净并重新开始了。

执行此操作的“简单”方法是重新安装操作系统，使用标准的备份和迁移功能来保存您的Aqua级应用程序，用户首选项，文档等。但这非常激烈，而且不应该是必要的。

首先手动清理：

Uninstall MacPorts。
brew uninstall $(brew list)。这将删除所有Homebrew包。您只能{/ 1}}而不是unlink，但您确实希望在清理机器后重建它们。

uninstall。这消除了大多数第三方Python安装。如果你不知道你的来自哪里，那真是你能做的最好的。

看看sudo rm -rf /Library/Python /Library/Frameworks/Python.framework /usr/local/share/python*中的剩余内容。各种各样的东西都可以在这里结束，从安装了Apple Python的脚本到GUI应用程序（如TextMate，Aquamacs或GitHub）的命令行工具，再到二进制安装SDL或Qt的工具，所以你可能不想只是消灭了整个事情 - 但你确实想要看一遍。另请查看/usr/local/bin和/usr/local/lib。

您还可能需要修改/Library/Frameworks等文件，以撤消您或安装人员可能做出的更改，例如将~/.profile或/opt/local/bin添加到/Library/Frameworks/Python.framework/Versions/2.7/bin 。可以也可以在PATH中进行更改，但这种可能性较小（并且不太可能导致问题）。

现在运行/etc以确保Homebrew满意，重新安装所需的任何非Python相关的Homebrew软件包和二进制安装程序，现在您已准备好安装/配置python，PyQt4或PySide ，iPython等，每一次都很合适，幸福生活（直到明年你买一台新电脑）。

从命令行启动IPython qtconsole（安装所有依赖项后）

1 个答案: