如何使用 PyQGIS 将项目加载到 QGIS 中？

Question

我正在使用 PyQGIS Cookbook 学习 PyQGIS，并购买了 PyQGIS Programmers Guide。我已经能够使用小脚本加载图层，但没有运气将项目加载到 QGIS 中。我不断收到第 13 行的“SyntaxError：无效语法”。我在 QGIS 中使用 Python 控制台并输入“import _loadproject”来启动脚本。

谁能指出我哪里出错了？

"""Load Project: This is to test loading a project."""

from PyQt4.QtGui import *
from PyQt4.QtCore import *
from qgis.core import *
from qgis.utils import iface

class ProjectScript:

def __init__(self, iface):
    self.iface = iface

def load_project(self)
    project = QgsProject.instance() \
    project.read(QFileInfo('S:/SOCAL/Section_28/SOCAL_CK47/Control_Data/SOCAL_CK47_project.qgs'))
    print project.fileName 'S:/SOCAL/Section_28/SOCAL_CK47/Control_Data/SOCAL_CK47_project.qgs'

def run_script(iface):
"""Run the script by loading and calling LoadProject methods."""
fs = ProjectScript(iface)
fs.load_project()

Answer 1

检查这个例子：

from PyQt4.QtGui import *
from PyQt4.QtCore import *
from qgis.core import *
from qgis.utils import iface

class ProjectScript:

    def __init__(self, iface):
        self.iface = iface

    def load_project(self):
        project = QgsProject.instance() 
        project.read(QFileInfo('S:\\SOCAL\\Section_28\\SOCAL_CK47\\Control_Data\\SOCAL_CK47_project.qgs'))
        print project.fileName()

    def run_script(iface):
        """Run the script by loading and calling LoadProject methods."""
        fs = ProjectScript(iface)
        fs.load_project()

保存此脚本，例如 ProjectScript.py 使用 python 控制台，然后执行。下一张图片显示结果。