old_contents: import sys
  
  PY3 = sys.version_info[0] >= 3
  
  if PY3:  # pragma: no cover
      basestring = str
      unicode_type = str
      bytes_type = bytes
  
      def iteritems(d):
          return iter(d.items())
  
      def itervalues(d):
          return iter(d.values())
      range = range
      zip = zip
      from functools import reduce
      import builtins
      from urllib.request import urlretrieve
  else:  # pragma: no` cover
      # Python 2
      basestring = basestring
      unicode_type = unicode
      bytes_type = str
  
      def iteritems(d):
          return d.iteritems()
  
      def itervalues(d):
          return d.itervalues()
      range = xrange
      from itertools import izip as zip, imap as map
      reduce = reduce
      import __builtin__ as builtins
      from urllib import urlretrieve
  
  try:
      from cyordereddict import OrderedDict
  except ImportError:  # pragma: no cover
      try:
          from collections import OrderedDict
      except ImportError:
          from ordereddict import OrderedDict
  
  try:
      # solely for isinstance checks
      import dask.array
      dask_array_type = (dask.array.Array,)
  except ImportError:  # pragma: no cover
      dask_array_type = ()
  
new_contents: import sys
  
  PY3 = sys.version_info[0] >= 3
  
  if PY3:  # pragma: no cover
      basestring = str
      unicode_type = str
      bytes_type = bytes
  
      def iteritems(d):
          return iter(d.items())
  
      def itervalues(d):
          return iter(d.values())
  
      range = range
      zip = zip
      from functools import reduce
      import builtins
      from urllib.request import urlretrieve
  else:  # pragma: no cover
      # Python 2
      basestring = basestring
      unicode_type = unicode
      bytes_type = str
  
      def iteritems(d):
          return d.iteritems()
  
      def itervalues(d):
          return d.itervalues()
  
      range = xrange
      from itertools import izip as zip, imap as map
      reduce = reduce
      import __builtin__ as builtins
      from urllib import urlretrieve
  
  try:
      from cyordereddict import OrderedDict
  except ImportError:  # pragma: no cover
      try:
          from collections import OrderedDict
      except ImportError:
          from ordereddict import OrderedDict
  
  try:
      # solely for isinstance checks
      import dask.array
      dask_array_type = (dask.array.Array,)
  except ImportError:  # pragma: no cover
      dask_array_type = ()
  
subject: fix typo in pycompat comment