Fix Py27 incompatibility.

Author: csadorf

signac/contrib/filterparse.py

@@ -3,10 +3,10 @@
 # This software is licensed under the BSD 3-Clause License.
 from __future__ import print_function
 import sys
-from urllib.parse import urlencode
 
 from ..core import json
 from ..common import six
+from ..common.six.moves.urllib.parse import urlencode
 if six.PY2:
     from collections import Mapping, Iterable
 else:

signac/contrib/project.py

@@ -14,7 +14,6 @@
 from contextlib import contextmanager
 from itertools import groupby
 from multiprocessing.pool import ThreadPool
-from urllib.parse import urlparse
 
 from .. import syncutil
 from ..core import json
@@ -37,6 +36,7 @@
 from .filterparse import parse_filter
 from .filterparse import urlencode_filter
 from .filterparse import _parse_filter_query
+from six.moves.urllib.parse import urlparse
 if six.PY2:
     from collections import Mapping, Iterable
 else:

signac/uri.py

@@ -3,9 +3,9 @@
 # This software is licensed under the BSD 3-Clause License.
 import os
 import re
-from urllib.parse import urlparse, urlunparse
 
 from .contrib.project import Project
+from .common.six.moves.urllib.parse import urlparse, urlunparse
 
 
 _PATH_SCHEMA = r'(?P<root>.*?)(\/api\/v(?P<api_version>\d+)(?P<path>.*))'