pydev_monkey_qt.py 文件源码

def _patch_import_to_patch_pyqt_on_import(patch_qt_on_import):
    # I don't like this approach very much as we have to patch __import__, but I like even less
    # asking the user to configure something in the client side...
    # So, our approach is to patch PyQt4/5 right before the user tries to import it (at which
    # point he should've set the sip api version properly already anyways).

    dotted = patch_qt_on_import + '.'
    original_import = __import__

    from _pydev_imps._pydev_sys_patch import patch_sys_module, patch_reload, cancel_patches_in_sys_module

    patch_sys_module()
    patch_reload()

    def patched_import(name, *args, **kwargs):
        if patch_qt_on_import == name or name.startswith(dotted):
            builtins.__import__ = original_import
            cancel_patches_in_sys_module()
            _internal_patch_qt() # Patch it only when the user would import the qt module
        return original_import(name, *args, **kwargs)

    try:
        import builtins
    except ImportError:
        import __builtin__ as builtins
    builtins.__import__ = patched_import