Switch to absolute imports for Python3 compatability

Part of google#412

Started by:
futurize -nw -f libfuturize.fixes.fix_absolute_import  .
And followed up by fixing a few local problems.

extensions/googletransit/__init__.py

@@ -14,8 +14,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from agency import *
-from fareattribute import *
-from route import *
-from setup_extension import *
-from stop import *
+from __future__ import absolute_import
+from .agency import *
+from .fareattribute import *
+from .route import *
+from .setup_extension import *
+from .stop import *

extensions/googletransit/agency.py

@@ -14,7 +14,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import extension_util
+from __future__ import absolute_import
+
+from . import extension_util
 import transitfeed
 
 class Agency(transitfeed.Agency):

extensions/googletransit/extension_util.py

@@ -14,7 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from pybcp47 import Bcp47LanguageParser
+from __future__ import absolute_import
+from .pybcp47 import Bcp47LanguageParser
 from transitfeed import problems as problems_class
 from transitfeed import util
 

extensions/googletransit/pybcp47/__init__.py

@@ -14,4 +14,5 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from bcp47languageparser import *
+from __future__ import absolute_import
+from .bcp47languageparser import *

extensions/googletransit/pybcp47/testpybcp47.py

@@ -16,11 +16,12 @@
 
 # Unit tests for the bcp47languageparser module.
 
+from __future__ import absolute_import
 import codecs
 import os
 import unittest
 
-from bcp47languageparser import Bcp47LanguageParser
+from .bcp47languageparser import Bcp47LanguageParser
 
 class PyBcp47TestCase(unittest.TestCase):
   bcp47parser = Bcp47LanguageParser()

extensions/googletransit/setup_extension.py

@@ -14,12 +14,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import absolute_import
 import transitfeed
 
-import agency
-import fareattribute
-import route
-import stop
+from . import agency
+from . import fareattribute
+from . import route
+from . import stop
 
 def GetGtfsFactory(factory = None):
   if not factory:

transitfeed/__init__.py

@@ -56,33 +56,34 @@
   TimeToSecondsSinceMidnight(): Convert HH:MM:SS into seconds since midnight.
   FormatSecondsSinceMidnight(s): Formats number of seconds past midnight into a string
 """
+from __future__ import absolute_import
 
 # util needs to be imported before problems because otherwise the loading order
 # of this module is Agency -> Problems -> Util -> Trip and trip tries to
 # use problems.default_problem_reporter as a default argument (which fails
 # because problems.py isn't fully loaded yet). Loading util first solves this as
 # problems.py gets fully loaded right away.
 # TODO: Solve this problem cleanly
-from util import *
-from agency import *
-from fareattribute import *
-from farerule import *
-from frequency import *
-from gtfsfactory import *
-from gtfsfactoryuser import *
-from gtfsobjectbase import *
-from loader import *
-from problems import *
-from route import *
-from schedule import *
-from serviceperiod import *
-from shape import *
-from shapelib import *
-from shapeloader import *
-from shapepoint import *
-from stop import *
-from stoptime import *
-from transfer import *
-from trip import *
+from .util import *
+from .agency import *
+from .fareattribute import *
+from .farerule import *
+from .frequency import *
+from .gtfsfactory import *
+from .gtfsfactoryuser import *
+from .gtfsobjectbase import *
+from .loader import *
+from .problems import *
+from .route import *
+from .schedule import *
+from .serviceperiod import *
+from .shape import *
+from .shapelib import *
+from .shapeloader import *
+from .shapepoint import *
+from .stop import *
+from .stoptime import *
+from .transfer import *
+from .trip import *
 
 from transitfeed.version import __version__

transitfeed/agency.py

@@ -14,9 +14,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from gtfsobjectbase import GtfsObjectBase
-from problems import default_problem_reporter
-import util
+from __future__ import absolute_import
+from .gtfsobjectbase import GtfsObjectBase
+from .problems import default_problem_reporter
+from . import util
 
 class Agency(GtfsObjectBase):
   """Represents an agency in a schedule.

transitfeed/fareattribute.py

@@ -14,9 +14,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from gtfsobjectbase import GtfsObjectBase
-from problems import default_problem_reporter
-import util
+from __future__ import absolute_import
+from .gtfsobjectbase import GtfsObjectBase
+from .problems import default_problem_reporter
+from . import util
 
 class FareAttribute(GtfsObjectBase):
   """Represents a fare type."""

transitfeed/farerule.py

@@ -14,8 +14,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from problems import default_problem_reporter
-from gtfsobjectbase import GtfsObjectBase
+from __future__ import absolute_import
+from .problems import default_problem_reporter
+from .gtfsobjectbase import GtfsObjectBase
 
 class FareRule(GtfsObjectBase):
   """This class represents a rule that determines which itineraries a

transitfeed/frequency.py

@@ -14,8 +14,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from gtfsobjectbase import GtfsObjectBase
-import util
+from __future__ import absolute_import
+from .gtfsobjectbase import GtfsObjectBase
+from . import util
 
 class Frequency(GtfsObjectBase):
     """This class represents a period of a trip during which the vehicle travels

transitfeed/gtfsfactory.py

@@ -14,22 +14,23 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from agency import Agency
-from fareattribute import FareAttribute
-from farerule import FareRule
-from feedinfo import FeedInfo
-from frequency import Frequency
-from loader import Loader
-import problems
-from route import Route
-from schedule import Schedule
-from serviceperiod import ServicePeriod
-from shape import Shape
-from shapepoint import ShapePoint
-from stop import Stop
-from stoptime import StopTime
-from transfer import Transfer
-from trip import Trip
+from __future__ import absolute_import
+from .agency import Agency
+from .fareattribute import FareAttribute
+from .farerule import FareRule
+from .feedinfo import FeedInfo
+from .frequency import Frequency
+from .loader import Loader
+from . import problems
+from .route import Route
+from .schedule import Schedule
+from .serviceperiod import ServicePeriod
+from .shape import Shape
+from .shapepoint import ShapePoint
+from .stop import Stop
+from .stoptime import StopTime
+from .transfer import Transfer
+from .trip import Trip
 
 class GtfsFactory(object):
   """A factory for the default GTFS objects"""

transitfeed/gtfsfactoryuser.py

@@ -14,6 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import absolute_import
 class GtfsFactoryUser(object):
   """Base class for objects that must store a GtfsFactory in order to
      be able to instantiate Gtfs classes.
@@ -38,7 +39,7 @@ def GetGtfsFactory(self):
       #            This is why the import is here and not at the top level.
       #            When this runs, gtfsfactory should have already been loaded
       #            by other modules, avoiding the circular imports.
-      import gtfsfactory
+      from . import gtfsfactory
       self._gtfs_factory = gtfsfactory.GetGtfsFactory()
     return self._gtfs_factory
 

transitfeed/gtfsobjectbase.py

@@ -14,7 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from gtfsfactoryuser import GtfsFactoryUser
+from __future__ import absolute_import
+from .gtfsfactoryuser import GtfsFactoryUser
 
 class GtfsObjectBase(GtfsFactoryUser):
   """Object with arbitrary attributes which may be added to a schedule.

transitfeed/loader.py

@@ -14,16 +14,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import absolute_import
 import codecs
 import cStringIO as StringIO
 import csv
 import os
 import re
 import zipfile
 
-import gtfsfactory as gtfsfactory_module
-import problems
-import util
+from . import gtfsfactory as gtfsfactory_module
+from . import problems
+from . import util
 
 class Loader:
   def __init__(self,

transitfeed/problems.py

@@ -15,10 +15,11 @@
 # limitations under the License.
 
 from __future__ import print_function
+from __future__ import absolute_import
 import logging
 import time
 
-import util
+from . import util
 
 # Problem types:
 # Error: A data issue not allowed by the GTFS spec.

transitfeed/route.py

@@ -14,9 +14,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from gtfsobjectbase import GtfsObjectBase
-import problems as problems_module
-import util
+from __future__ import absolute_import
+from .gtfsobjectbase import GtfsObjectBase
+from . import problems as problems_module
+from . import util
 
 class Route(GtfsObjectBase):
   """Represents a single route."""

transitfeed/schedule.py

@@ -14,6 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import absolute_import
 import bisect
 import cStringIO as StringIO
 import datetime
@@ -39,10 +40,10 @@
 import weakref
 import zipfile
 
-import gtfsfactory
-import problems as problems_module
+from . import gtfsfactory
+from . import problems as problems_module
 from transitfeed.util import defaultdict
-import util
+from . import util
 
 class Schedule(object):
   """Represents a Schedule, a collection of stops, routes, trips and

transitfeed/serviceperiod.py

@@ -14,12 +14,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import absolute_import
 import datetime
 import re
 import time
 
-import problems as problems_module
-import util
+from . import problems as problems_module
+from . import util
 
 class ServicePeriod(object):
   """Represents a service, which identifies a set of dates when one or more

transitfeed/shape.py

@@ -14,11 +14,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import absolute_import
 import bisect
 
-from gtfsfactoryuser import GtfsFactoryUser
-import problems as problems_module
-import util
+from .gtfsfactoryuser import GtfsFactoryUser
+from . import problems as problems_module
+from . import util
 
 class Shape(GtfsFactoryUser):
   """This class represents a geographic shape that corresponds to the route

transitfeed/shapeloader.py

@@ -14,7 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from loader import Loader
+from __future__ import absolute_import
+from .loader import Loader
 
 class ShapeLoader(Loader):
   """A subclass of Loader that only loads the shapes from a GTFS file."""

transitfeed/shapepoint.py

@@ -15,10 +15,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import absolute_import
 import bisect
-from gtfsobjectbase import GtfsObjectBase
-import problems as problems_module
-import util
+from .gtfsobjectbase import GtfsObjectBase
+from . import problems as problems_module
+from . import util
 import sys
 
 class ShapePoint(GtfsObjectBase):

transitfeed/stop.py

@@ -14,11 +14,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import absolute_import
 import warnings
 
-from gtfsobjectbase import GtfsObjectBase
-import problems as problems_module
-import util
+from .gtfsobjectbase import GtfsObjectBase
+from . import problems as problems_module
+from . import util
 
 class Stop(GtfsObjectBase):
   """Represents a single stop. A stop must have a latitude, longitude and name.