__init__.py

import logging
import os
import sys

log = logging.getLogger('legger')
log.setLevel(logging.DEBUG)

sys.path.append(
    os.path.join(os.path.dirname(os.path.realpath(__file__)), 'external')
)

tdi_external = os.path.join(os.path.dirname(os.path.realpath(__file__)),
                            os.path.pardir,
                            'ThreeDiToolbox',
                            'external')

try:
    # temporary fix of libary geoalchemy2 in ThreeDiToolbox
    geoalchemy_fix_file = os.path.join(tdi_external, 'geoalchemy2', '__init__.py')
    f = open(geoalchemy_fix_file, 'r')
    new_content = f.read().replace(
        """
                                bind.execute("VACUUM %s" % table.name)""",
        """
                                try:
                                    bind.execute("VACUUM %s"%table.name)
                                except:
                                    pass
        """)
    f.close()
    f = open(geoalchemy_fix_file, 'w')
    f.write(new_content)
    f.close()
except:
    log.warn('patch geoalchemy does not work')

sys.path.append(tdi_external)


# noinspection PyPep8Naming
def classFactory(iface):  # pylint: disable=invalid-name
    """Load main tool class
    :param iface: QgsInterface. A QGIS interface instance.
    """
    from .qgistools_plugin import Legger

    return Legger(iface)